Kinda like them putting extremely tight seat belts on the Cedar Creek Mine Train. I think those restraints are honestly a tighter fit on me than the ones on Dragster. I don't get it.
I think Kumba would be the next logical coaster to try. It's a much better transition than Montu, which is a great ride but easily the most intense of the 3 at BGT.
Don't miss Kraken at SeaWorld. I think you'll like that one as well.
By the time you get to Universal, you'll be ready for The Hulk (which is IMO the best B&M Looper ever).
It's probably too late, but I'll do my best.
1) My understanding is that you'll pay the Gold price for the Platinum Flash Pass.
2) It seems perfectly safe to me. I'm not sure if there's any height or weight limit.
3) I believe you can ride however you want. I rode by myself, so there's certainly no "two per seat" rule.