A lot of it is going to depend on your height and how you carry your weight.
DH is 5'10" and over that weight, and the only ride that still exists at DL/DCA that he can't ride is Sky School. The belly doesn't work because he has to put his legs between the bars of the restraint, and because he has tree trunk legs he can't do that.
He chooses to not ride Astro Orbiter. Then again, I made the same choice when I was 220. I'm only 5'3" though. It's just super-awkward to get out of.
Don't ride Big Thunder with a child, if at all possible.