Sounds like a good problem to have, Grabber!
Starship Troopers is a "sleeper" in my opinion. (As in, good, but not many people know it)
You mentioned a few goodies. FT, Taxi, WW, you will have fun with any of those. I would go for something a little different than JP, so I would stay away from a PL type ruleset (Funhouse)
Those early 90's are getting higher and higher $- might want to consider some late 80's!
Congrats on #2!