Hi BB,
For hardened steel powder coating shouldn't be a problem? I see that a lot of folks on here have powder coated their reel. Painting the chassis myself is a good way to save some money (if done correctly) and from what I have heard the hammertone green is a very robust finish. Also, I own a spray gun and compressor but no booth.
BTW what do you think about galvanising the front and rear rollers? Don't think anyone has tried that yet. The only problem I can forsee, is perhaps cracks appearing in the cast iron after being heated in the molten pool, which would be disastrous.
Thanks
xhall