Yep. I'm excited to see you do this. I've always wondered why more people didn't use these. Big, roomy, easy to drive, carry decent weight, especially the dual rear tire ones.
Anyway, did some research but can't find what the actual weight of the truck itself is. But see the GAWR #'s, those are the front and rear axle weights. So I'm guessing you could easily carry 4500-5000 lbs in there. Make sure you have good brakes on it though. Play with your layout on paper first.
Are you going to coat the floor with anything. Be sure to keep slide thru door closed when traveling. You don't want 50 gal of bleach coming into the front seat with you.
You're going to have a boatload of room. Got me wanting one now, lol. Have fun and keep me up-to-date with pics.