I am wondering how steep is too steep for the ramp up to the coop? We start construction this weekend and the plans are to have the entire thing be 4 1/2 x 11. The coop should be 4 1/2 x 5 so that should make the end of the coop to the end of the run 6 feet. Does the ramp need to go the whole length? I hope this makes sense. Thanks... Only 6 more days until my babies come from MPC 1 EE, 2 Red Star and 1 Sivler laced Wyandotte. Can you tell I am excitted?