Nice. Too wide for my style but I'd give that height a shot to see what it's like. I just put on 10" Narrow Z's on mine over the winter. The set that came on your bike look like Nash Gimps or similar, I like the curves on them but they weren't cheap.
Powdercoating isn't difficult at all. If its just an occasional thing, an old oven will do just fine. Don't waste money on the "prep" sprays. An acetone dip and wipe does the trick. I generally use a scotch brite pad to prep the surface prior. I got my first gun at Eastwood and its good for smaller projects. You'll get a lot of 'dust' spraying the parts though so take the time and build a spray booth out of a box or something first