Overthinking frunk reinforcement install, Advice on painting prep Options

[bbrock]

Alright, I know I'm overthinking this but it's driving me crazy. I need to reinstall my front trunk reinforcement on my rustoration build soon and originally planned to spray the backs of the reinforcement brackets and the area under the headlight buckets with 2K primer while everything was open and accessible. Then I would spray color in there as best I can when I do the rest of the chassis which won't be for several months. The primer needs to be top-coated within two weeks without having to scuff sand, but once the pieces are welded in, sanding in there won't be possible. So what do you all think is the best way to proceed for best long term rust protection and being able to get color in that recess so it looks factory correct? Maybe just spray the backs of the reinforcement brackets now and save the rest for later even though it is a PITA to get paint in there? (IMG:style_emoticons/default/confused24.gif)