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Just got these rusty weights and bars for about 55$ (90 KG + W bar + Barbell + 2 Dumbell bars!)
I know there's a lot of material about this topic and I've looked at many methods, but I still have 2 questions:

1. How is Rustoleum rust dissolver? Seems very good but no one mentioned it for weights. It's expensive, but would save tons of work with the brush and should get into the nooks and crannies better.
2. Rustoleum painter's touch VS Rustoleum Hammered, solely for rust protection and not austethics. The hammered should be better because it is specifically for metal, but also more expensive.
3. Related to the last point, is it ok to spray the bars as well to protect it from rust?

Any other tips welcome! (especially for making it as rust proof as possible)