Thanks! Since he knows his letters and sounds, but just not consistently, since he is writing some letters and doing well with coloring, since he turns 5 in Nov., since he knows his lower numbers and can write them, since he is already doing the R & S Workbooks well, and since you would enjoy having your 2 sons work together - I think I would combine the 2 of them in LHFHG half-speed.

I would work on letter recognition and sounds with him, as well as cutting over the next weeks. The "Leap Frog Letter Factory" DVD is excellent for helping with learning letters and sounds. It is inexpensive, cute, 30 minutes long, and available online or at Target. I'd have him watch it each day.

I'd also get him some Kumon cutting workbooks from B & Noble or online. They too are cute, inexpensive, and fun to do. Just working on a page or two each day with him over the next weeks will help.

Your older ds can do "A Reason for Handwriting A" (or something comparable) to work into writing sentences. I am thinking once your older ds finishes his phonics and works up to writing sentences, you may want to get the Beyond Little Hearts guide for the Emerging Reader's Set, Spelling List 1's plans, and grammar 1 x a week. This can be done mid-year. As long as you are willing to go half-speed Little Hearts until ds really firmly places there, I'd say combining will work well for the long run.

I'd guess by the end of Christmas and the start of the new year you will be able to go full-speed with the 2 of them, as well as add the other things I mentioned from Beyond for older ds. But, again, this is just an idea - what do you think?
In Christ,
Julie