While your down there, check all front suspension bits and make sure theres no excessive play in any of the bushings, ball joints, tie rods, CV axles and boots etc.
Shameless plug for the fuel tank strap writeup I just made:
Fuel Tank Strap Replacement
For rust prevention, I started out using POR15 to paint things. I found it doesn't stick well to anything that's already been painted and it is a lot of mess. I was able to peel it some of it off a a day after applying to my LCAs. Works decently on surface rust after loose crusties have been removed and clean metal has been etched. Recently I switched to using Rustoleum Rust Reformer, which I like better. I haven't had it on my test area long enough to see how it holds up, but application is much easier, less messy, and it adhered well to the surface.