I went for charcoal colored aluminum screen for the porch, will replace the fiberglass in the door with it when it gets punctured. I'd use the 1/4 x 1-1/2 strips if local HD or Lowes had decent ones, but they didn't, so I've gone for the nominal 1x2 treated, which are actually closer to 1/2 x 1-1/2; thick enough for a good screw to bite. (HD calls them 3/4", but that's a crock)
Stopped by HD today just for a new pack of SS staples, they were out, I'll probably find some at Ace. I'll go with 1-1/4" "deck" screws, got them in green to match the paint color for the trim, and they're properly rated for treated wood. PITA yanking the old screen screws -- a mix of stuff, different sizes, none of them suitable for outdoors.
I don't think I over build, but when I do something I don't want to have to redo it in a couple years. Even simple stuff like the stair rails, I use 5" ledger screws to tie the 4x4s to the stringers, plus heavy duty simpson ML26Z angles and 1/4" screws, so the stair guards get bonded to the main deck rails. It's nice to be able to sit on a rail or lean against it, with no doubt that it'll hold
