Jeep Dawg I like that gan can setup and need to figure out a way to haul a couple cans.
Mounting the high lift to the roll bar with 2 bolts welded on is pretty easy and keeps it inside. Making things lock can be pretty easy, buy a "set" of matched key pad locks and drill out your mounts for pad locks. It also keeps wing nuts from disappearing.
Finding one that's an air tank commercially made might be hard, I don't think I've ever seen a mass produced bumper with an air tank. I'm guessing it's a liability thing.
Price ranges for bumpers is huge. Shipping can be a deal breaker. I think a lot of them the tire carrier breaks down for shipping which could create problems later on. Open up your friendly quadratec catalog for some ideas.
a to z fabrication has a nice tire carrier hinge that should be waiting for me when I get back. I want to say it was $40 or $50, not sure if you could make it for that by the time you factored in materials, bearings, and lathe time.