I think if your dilemma is convincing your dh to let you homeschool - then what you need to do is to give your dh information/research/etc showing the benefits of homeschooling. Introduce him to other parents you know with slightly older kids who've been homeschooling.
Another way to convince him to let you homeschool *might* be for you to give his ideas a try too.
I can't imagine making predictions about a child's career at 28 months old - no matter how profoundly gifted they might be (or how not profoundly gifted they might be!). I've always felt it's best to be open-minded, give children the opportunity to be exposed to a wide variety of things, and then let them find their own passions. Eventually they will find their own passions anyway, whether they're the career we as parents wanted them to find or not.
Best wishes,
polarbear
