Here is where I landed. 50W panel, single battery. Tested the load and the battery supported 2x V3 cams on its own for approximately 30 hours with no solar input. I was anticipating two batteries so found a different tray to support two. With real life load figured out I might just add a second battery and do some additional stuff using this setup. Maybe some LED lights.
Anyway, I get a bit OCD so did some cable management for now and cable pass through and such. 
Thanks again for the guidance!
