Alloy, your point about the stairs is valid, but the stairs are good exercise for us.
My wife designed the floorplan, and after many many different floor plans were drawn up, this is what worked best for us. It also takes advantage of the platform in between the cab and box, which will serve as our front porch.
In swing is easier to reinforce than out swing. For starters, the hinges are on the inside. I have served as a breacher on an entry team, and I'd much rather take out external hinges or pull an out swing door with a Halligan tool, than to try to breach something like what we're putting together here.
And our two mini front walls are going to be massively strong, once we fill the stud bays completely with 3.5" thick 25 psi rigid R24 polyiso foam board, foamed in place with urethane foam, and 3/4" plywood screwed and bonded to it inside and out with PL Premium Fast Grab urethane construction adhesive and then completely encapsulated inside and out with three coats of West System marine-grade epoxy. Plus, those two mini-walls are only PART of the lateral support for the box. The bathroom wall, the garage wall, the kitchen counter and overhead cabinets, the bedroom armoire, the gun safe, the battery box, and just about everything inside that runs perpendicular to the walls, is going to be a structural member.