Most people love having two doors, especially when they have kids. With the rear door being to the crapper the younguns (and you and anyone else visiting your campsite) aren't tracking mud all the way through the camper and pissing off the wife. Shouldn't impact leveling at all. I had customers that use their doors as a level...open them up and when they don't swing, you know you're leveled out.
ETA: Keep in mind those jacks in the corners are not for leveling, they're for stabilizing. They aren't designed to support the weight of the camper. Use wood under the tires (1x6's work great) under the tires and tongue jack. You can buy leveling blocks that look like big orange legos, too, but wood works just as well. Also, make sure you have an electric tongue jack on a camper that size, unless you just really like working out.
This post was edited on 9/25 at 1:25 pm