I cant offer much help with your dh but i will send you a hug:grouphug:. I am very blessed to hve a dh that was on board with hs from the get go.
As for the teaching multiples mine are dd6 and dd9 and we do Bible, History, Science, Art, Spanish, together. The math, grammar, copywork/dictation, writing for dd9, phonics are done seperately so I stagger them. I have my dd9 working independently on her writing for example while I do phonics and copywork with dd6. we have changed our schedule a couple of times as you probably will until you find what fits. Good luck to you and remember you are doing what is best!!!!