I like the direction you are going with this bumper, I don't know how well your mounting points are going to fair, but the design on the bumper its self seems like a good simple design. For your swing out I would highly recommend spending a few bucks, and adding some grease fitting to your hinge Assembly, I've built a bunch of this style of tire carriers, and it doesn't take a whole lot of rust to seize it up. And don't forget to provide a new licence plate mounting bracket, and a light for it.