I've actually got the Gates Racing Timing Belt (it's got Kevlar in it) on sale right now if you want a bit of extra insurance:
Gates Racing Timing Belt - DOHC 6G72 - Maximal Performance
As for other 60k parts I'd go direct with a decent Mitsu dealer like Cherry Hill at Mitsparts.com.
As for your reverse lights mine were a bit touchy at one point, working sometimes and not others. Check all the wires towards the back and make sure they're clean...it seems like they get a lot of dirt, salt, and other grime back where they are.