I'll take a look around. Havent looked at roofing materials quite yet. I dont think I'm going to do corrugated steel, kinda want it to match the house (which has 3 tab). Not too concerned about the perfect shingle match, as long as it kinda color matches.

I an going with a ridge vent. Out here, a gable vent will fill my shed with snow in 43 seconds.

I've already had to repair wind driven shingles on the house.