Just curious, why you mentioned the oven protruding into the bedroom. Ours has that, but I never saw it as a problem. Kind of like it, as we use it for a shelf in there.
We also have no grey tank, but most of the time we use full hookup sites. I used the "blue tank" a couple times this past year. As I get older, I look for things to do, that cause me to engage in physical activity. Yankin' a "blue tank" up to the dump station can be quite a workout! (Forgot the hitch to slip it over the ball both times!