I ended up buying the harbor freight tire changer on sale for under $40 and I mounted to a 16' buggy trailer. With this tool I was able to break the beads on a couple sets of tires, front & back, and I got the fronts on without a problem.
I thought about trying to wrestle some new rear raz'rs on my lady's 250ex rims, but decided to take them to a local shop for $10.
The rear tires can be put on by hand if you're willing to wrestle em on. And this is where the HF tool comes in handy. With the HF tool mounted firmly, you can also firmly secure the rim so it doesn't move. Even still, you best bring a lunch along with soap and a lot of time. You'll definitely get a work out.
If you're super worried about scratching your rims, a rag between the HF tools and the rim works good. And any scratch you get can be polished out. My rims are the stock steelies, so I don't worry about scratches.