"ALL of my own arrestors and coax switches are INDOORS."
After reading that, I was very interested to go in that direction myself; it'd save lots of problems for me.
I thought, "Maybe K9KJM has some pictures on the web of his shack and I could get some good ideas".
You know the story..one picture worth a thousand words.
So Googling on your call, I was impressed to get over 4200 hits and this one "http://www.n5wj.com/gallery/shack/HP_Feb_2005_080
" has what I think could be your panel in the immediate background. If it is, I wish I could see more.