Update:

Just created this project so this update will probably be the shortest one. Worked on modeling a lot. Trying to plan everything out in the case before actually cutting into it. Acquired some scrap sheet metal, measuring 3/32" thick so whatever gauge that is. Probably overkill for just mounting electronics but what I have. Starting to print out drawings of each component in order to get a physical idea of where things will line up. 3D printed the panel mounts for the case which can be found here. Also starting to think about/work the problem in regards to heating and cooling along with weather management. I obviously want the case to be weather resistant as it will be sitting on a roof, but I don't want to restrict air flow to the Pi and cause overheating. I believe it will get quite hot in there because I have a power supply, Pi, and RTL-SDR module running. I am wanting to add some sort of vent but need to find/make the right kind to keep as much weatherproofness, it's fun making up words, as possible. And it needs to look cool...always needs to look cool. If anyone has an suggestions, please let me know. Also I'm thinking of using those waterproof pass-throughs for the antenna feed line input so if anyone has any experience with that I'd love to hear about it. 

I have a couple other projects going on so this might not get updated as often as I want to but that is life. 

-Nate