[Transitioning to classical homeschooling particularly WTM FLL & WWE/S]

My kiddos will be in 6th & 3rd grade next year. I've pretty much got the rest of our curriculum worked out EXCEPT language arts. We haven't been very classical and really want to do a more WTM/classical approach next year. I think it will greatly benefit both my kiddos.
Is there anything (blog, article, flow chart, interpretive dance) that explain how to transition? What levels do we start, which do we skip or move faster or slower? Take First Lang. Lessons. My 8 year old hasn't had formal grammar or writing yet. He's followed along with his brother while watching IEW but its time for more. He's still an emerging reader but going through a big leap in ability right now. Do I start with FLL1 then skip to 3? What about WWE?
My 11 year old is working through IEW SICA (older program) right now. When he finishes IEW do we go to WWE?

tldr: I'm struggling with how to transition to a more classical homeschool eduction using WTM.

[WWYD? Restaurant added a tip, after the fact...UPDATE ADDED]

Please call and let the restaurant manager know. Adding an unauthorized tip is illegal and if that got out it could hurt the restaurant's reputation. I wouldn't even give your name or ask for a refund. Just let them know, and maybe start off with "We normally tip in cash and completely forgot to hand it over." (Or just "We normally tip in cash." stick to the truth).) 

[Feeling Lost. Need y'all's guidance. Curriculum & Planning.]

Y'all. I'm feeling utterly lost. ODS is 10.5, YDS is 7 and we've always homeschooled. The boys refuse to public school because they want to be together and with me, even cranky me. I have ADHD and fairly certain ODS does too but we've never had him tested. I also suspect he's somewhere on the gifted scale (not profound). We're debating having him tested just to see where he's strengths lie and where we can better meet his needs. I struggle with pulling together all the subjects and curriculum choices. I'm not trying to be a Pinterest mom but I want to engage my kids, let them do interesting stuff and get them prepared for 2ndary education and life while not going insane. We're a military family and we move in a year to ??? so this limits us on outside lessons, groups, etc. They both do sports and love it.
Given our struggles with sticking to a schedule and having a good rhythm we're going to implement a Block Schedule with some looping. As in, doing an hour of math and for 30 minutes he's going to work through his spine (Singapore). For 10 minutes work on multiplication & division memorization. Then 20 minutes of fun or practical math like board games, budgeting, read some of our fun math books. Repeat for other subjects. We've really been lacking the structure and expanded learning that drew us to homeschooling. While he's doing his independent work I'll be working with YDS on his stuff. We'll do some of the fun stuff together.

ODS - 10.5 years old. 5th grade

Math

• Singapore 4/5.
• We've gotten a little behind in the curriculum but have done a LOT of practical stuff and math is one of his favorites. He'll be breezing through or skipping several sections in 4 because he's already done it elsewhere. He's going to start working through LOF Fractions in a couple weeks. 

I'm thinking that we'll be heading to AOPS for PreA for 6th grade. Should I transition or supplement with Beast Academy? Is Singapore, with IP enough? 

Language Arts

• Grammar - Finishing Grammar and Writing 4, just the grammar portion. Will move to Fix It Grammar when done. 
• Writing - Starting IEW. 
• Spelling - Running through AAS to make sure we haven't missed anything. 
• Reading/Literature - Total Language Plus for guided novel study. Plus choosing books from various lists (Mensa, Newberry, NEH). ODS is an avid reader so we'll just be guiding him to good books for free reading. 

YDS - 7 years old, 2nd grade
Math

• Singapore
• Life of Fred (reading together, more for fun than main curriculum)

Language Arts

• All About Reading
• IEW
• Reading/Literature with Total Language Plus & his own reading lists for free reading. He LOVES listening to Audible books & being read to. He'll spend HOURS listening to books so this is very appropriate to him. 

***They'll be doing science, social studies, most extracurriculars together just on age appropriate levels.
Science

We've got a couple of Apologia texts & journals but we haven't been super formal with curriculum to this point. We want to work in a lot more experiments and hands on stuff. I really need to do some backwards planning to figure out what we need to do to get ready for middle and high school. 

Social Studies

• Notgrass Uncle Sam & I for an extended study on government as a lead up to the 2020 election.
• Jr. Ranger Programs. We like to camp & road trip so we'll be hitting a few of these. 
• Geography - ??? We'll talk about specific locations as they come up in our studies but we do want a more structured something to really reinforce geo. 

Extras

Some art with youtube, typing, coding & cryptography for ODS. Dinosaur stuff for YDS. This is open to whatever the kids are interested in. Plus practical life skills like cooking, budgeting, calculating prices while shopping, domestic chores, etc. 

 

I don't know if its FOMO or my guy saying something's off or self-doubt or what but I feel like I'm not doing right by my kids. The journey to today has not been very easy. We've had 2 international and 1 cross town moves in the past 5 years. There's another move in a year; possibly international. Given my ADHD and other (minor) health issues we've REALLY lacked structure that ODS needs. I know I've said structure multiple times but it has become clear that its VERY important for our family. 
Please give me ALL your thoughts and recommendations. I'm 100% open to whatever you have to say!