Thanks for the questions. Your pretty much not going to get better mileage going bigger no matter what you get, it gets about 10-12 depending on how many hills and such. Max speed is 55. It will definitely have more room and the amenities & won't be smashed in together as in a sportsmobile. The truck itself isn't very loud considering its size, it's more the wind noise when you have the windows down. The stereo gives clean sound even with the windows down. The mog is located at our film office in Henderson Nevada, just outside Vegas. Send me a PM if your interested and we can work something out, if the offer is right i'll include shipping up to wyoming.