That rim will work if you're wanting to relace to your factory hub and keep the drum brake.
While that's a totally feasable route to take, it's going to cost more money than doing a straight wheel swap. The harley swap is a tad less expensive, but more work if you want to keep your rear brake.
What I'd recommend is getting the rim in the Ebay link below (same one I have) new sprocket from Sprocket Specialists (tell them you want a harley bolt pattern and 525 pitch and however many teeth you want, I have a 39 tooth, if I'm not mistaken)
If you want a brake, you can get a disc and caliper for harley rear, and use a master cylinder from somethign else, but I'm not too sure of the whole process. I never used a rear brake, so I just ditched it when I did the swap.
Now that I've given a brief summary, go read my "harley rear swap for dummies
" thread. This mod is easy as hell if you skip the brake, if you want it, search for a how to, because I'm pretty sure someone on here has posted one. May wanna suggest a sticky if you find a good writeup...