For the size building your putting up I'd install one 18'w x 10't door, you'll never regret having it that big. Two side by side doors really limit your movement especially if you plan on putting the trailer inside.
Also, if you can, don't put the door tight to the corner, this limits the room needed to open the truck door that's against the side wall.
Don't forget, the measurements your talking about are outside dimensions, so you'll loose about 1' for the walls.
So you 23x26 is really about 22x25 inside. Put a 16' truck inside you are left with about 2' at the door and 4' at the back wall for tools and bench. Figure about 12' wide bays, 6' wide truck and 3' on each side for open doors and your done!
Mike B
