My new baby!

It's a '92 Sidekick 4x4.
The good:
Just about free.
Engine rebuilt 80,000 km ago, new exhaust, newer tailgate, clutch, brakes, alternator+ battery, 4 great 235/75R/15's on 5 nice alloys, JVC CD Player, no rips in the seats, interior was dirty but in just about perfect shape. Black hard top, brand new white soft top, QUIET! -- I keep thinking it's stalled, but it's just running smooth + silent. I drove it 500kms home on a trip permit and had no problems other than a leaky water pump.
The bad:
See attached. Damn the factory carpet and that rubber stick-on junk. I swear they put that stuff on JUST to put holes in the floor down the road. My '82 Toyota was the same way.... Once it was all ripped out:
The front body mount on the passenger side is dead (Bottom image) -- Rusted completely through the under-floor brace, and then cracked off. What are my options here? I haven't had much time to really get underneath and check it out, but I'm thinking if I can get some thick sheetmetal under the floor, and if that bodymount/brace will come off, I'll find some wide rectangle stock tubing and just make my own.
There are a few more holes, but they're the sheet-metal, pop rivet and tar kind. I'm going to bedliner the inside when it's all done, and hopefully won't have to worry about this again.
I haven't found a place that sells floor pans, etc for these things. Can someone point me to a place online? I'm up near Ottawa, ON (Canada) if anyone nearby has a welder and will work for beer.
