Pants pattern help!

[haptotrope.livejournal.com]

So I've got a flightsuit and it, has a drop crotch... major oh-em-gee dropcrotch, and I want to have none of it. If I was to do this by futzing with the inseam, do you think that I'd need to gusset the crotch? II'm a size 18-20 if that helps)

Or should I just cut it in half. and re-sew it up at the hips, zig zagging over the zipper (to cut it short) and showing no regard for the pockets?

and Oh yeah, I'm on a deadline. :-)

Any of these ideas work? have others? help! This is out of my league.... fun fur chaps, I got down, but I want to give the outfit a fighting chance.

THANKS!