Sorry to hear you are feeling isolated. This forum is a great place to get some of that out, and talk to a few people, though it's not the same as calling someone up and saying, 'Our 7 month old just took her first steps!' and having them just say 'Wow, that's great!'...First of all, I'd like to say:
THAT'S AWESOME! smile Your kids sound both amazing and wonderful, and yes, with that comes exhausting.
I have wondered about ocd with our youngest, she is on a hand-washing thing lately, and I know that 'classic'; have too look into it more.

Not getting enough sleep can make even minor issues seem like the end of the world, of course, so that is great advice to get more- if at all possible!

There was a great, long, thread around here about parental isolation when you have gifted kids. The more gifted the kids, likely the more isolated the adults. It's odd, you finally start to find some like minded people when you get to college/adulthood, but then having a toddler who's reading suddenly throws you back out of the group.
It is hard to identify people whose kids might also be gifted and therefore fit better with yours, parents who themselves might be gifted, but you should check around for something like that locally, please check out SENG - supporting the emotional needs of the gifted. They may have a group in your area, and be just the thing.

This resource seems really cool, too, I have recently used it to find a chess club - you might search for local gt support group via http://www.meetup.com/
I have only used it once and the meet up was 'as described', but your mileage may vary.