Jeep 4.0 in 69 Barracuda

I need some ideas on protecting bare metal from the rain for a short while.

On my heavy cast iron wood working tools, I use Johnson & Johnson paste wax to keep the cast iron from rusting. Those tools dont sit outside. My car has about 6 weeks of rain to deal with. I really did hit the body work early :-( But it felt so good to see it finally making headway. Now I just have a mess to stay on top of until I plasti dip it.

My other thought is to just hit the bare metal with rattle can rust converter and paint. Which would be small spots here and there.