Thanks all for the insight. Someone asked about height, still kicking around 16ft and 18ft. Probably 18ft so I'll have space for a mezzanine with ~ 10ft clearance. Have till spring to decide on that.
Hope this hasn't been answered 1000x's already. A search on here and Google didn't clear things up.
I am building a new shop. It will have 3 overhead doors, two 14' x 14' and one 12' x 12'. One of the things I don't like about my current shop is that when the overhead doors are open...