I have the MV-50, which is the one you show in your photo. Good little compressor for the money (I paid $25 on clearance, but even at ~$50 it's a good value). It will air up your tires, if you have the patience and time. They will do about 2.5 cfm, but I don't know how the volume at pressure changes. I find that they work pretty fast up to about 20 psi or 25 psi and the push to 30 psi and above takes the bulk of the time. They are apparently rated for 40% duty cycle and this I think is where your going to run into trouble. I have 33x9.50 tires and all four take roughly half an hour to fill with the short breaks to switch tires. The box said 40 minutes continuous at 40 psi in 75F temp. I've never had it shut down and a few times, like out in Moab, the air temp has been pretty warm. Your big mil tires are going to require being aired down a lot, I typically go to about 15 or 20 psi, depending on the trail, and come back up to 30 psi. Going down to 10 psi on your tires with that kind of volume will take forever to fill and will require at some point you shut down and let the compressor cool. The MV-50's limit is really about 35" tire. In reality you will probably require a 100% duty cycle compressor, which would not need to be shut down. Those are rarely going to cost $50, so add that to the cost of going with big tires. You could go with two of them, that would probably be the best option.
