Hi Chris! I like your posts, and thought you would make a good friend :).

I really like RS4K; it is easy to understand, inexpensive and fun, and, I imagine, a lot cheaper than Sonlight! I have two Tops, and they are great--we haven't gotten to them yet, but I can't wait (my dd adores science, and they look amazing! I got one of them really cheap here).

I don't have either of the TOPS you have, but the first page at least is a list of what you need, so hopefully you can figure some of it out?

Good luck!