Rear End Cleanup, Help?

Knotted wire brush wire wheel in a 4-1/2 inch angle grinder to bare metal and rinse with acetone/toluene carb cleaner. Dry and immediately brush on permatex extend rust treatment or go all out with POR-15 rust proofer. I go from the center section first out to the spring pads first, first one side and then the other, and then work on the backing plates. Just whatever I can get clean without it rusting before I can get cleaned and coated with anti rust. Follow that with a rattle can of rustoleum semi flat black as a primer, and after allowing to dry, follow up with brushing on a coat of semi flat black rustoleum. Let paint cure overnight. It may seem like overkill but I've not had any rust afterwards, and the finish is very resistant to chipping as well.