Wow. You really have a full plate! I can see why it has been difficult for you to homeschool your oldest with four other kids to think about. I'm not sure how much help I can offer, as my son was older (13) when he began homeschooling. He was pretty much self sufficient with educational stuff at that point- I just had to sign him up for courses and buy him materials. He did EPGY for a few courses, and started classes at the community college at 16. I htink the outside structure of the online classes and college was very helpful to him. He didn't do as well with the self stuff I tried to have him do at home. He'd read endlessly, but didn't much like the workbooks or textbooks. His old school didn't offer any special support beyond OT and PT for his motor issues, which they stopped when he was 11 as he made it into the low normal range.
My son also had trouble with time management and executive function skills, but he managed to get his work done as his screen time (computer, gameboy, etc.) was limited to when all schoolwork and chores were completed. He has done very well academically with college, and seems to get things done even though I am not there to supervise. Perhaps it's a matter of improvement with age and practice.
There's a yahoo group for parents of kids who are gifted with NVLD and AS. You might find it very helpful, as I did a few years ago.
Good luck. I know it can be a tough row to hoe, but at least you have options and know what you're dealing with- that's half the battle.
