Kriston - I really don't have any great advice but I did notice that your pro list for full time HSing is the largest list and the pro list for the PT HSing/PT GT school is the smallest.
The biggest thing I think would be getting enough alone time and time to work on your book. But if you considered how much you would be saving by not doing the GT school, maybe you could feel more justified in getting a babysitter more often? Maybe on a regular schedule? (maybe you already have a regular schedule, I don't know) Just to make sure you get enough time to yourself. Also, you could utilize the babysitter for DS6 and do something just with DS3.

Just a few thoughts - hope they help a little at least! smile