I may be a little harsh... but since you asked, here are my thoughts...
The hatch looks a lot like the Grasshopper, except that it goes all the way down to the floor. So while at first blush it seems easy, you've definitely got a stress riser at that joint in the middle. I'm sure it can be dealt with. Rik Keller has the same kind of hatch. We can check out his page to see how he handled that.
The second thing I am not that fond of is all the storage you have above the foot of the bed. It appears to be almost 24" of storage. Do you really need that much for camping on a weekend? What happened to keep it simple? I'm afraid that the large storage areas will overwhelm the tiny cabin, and make you feel crowded. I would cut the space down to half of that, and eliminate the outside access to those cabinets. You've got the ones at the floor level for that.
I don't see a dimension to the wheel center, but I can tell you that those fenders look strange. I expect a much more vertical angle on the fenders... like this...
And if that's the case, then your fenders are going to hit the door. So either you have to move the door forward, or the wheel backwards.
If you move the door forward, the top front corner will break through the front curve. If you move the wheel back you'll increase the tongue weight. You choose...
Other than that, it doesn't look bad.
I've made suggestions like this in the past, only to find out that the fenders were home made, the hatch was re-inforced, and the storage was necessary. So take these ideas with a grain of salt and use what is needed!
Mike...
P.S. If your supports are sticks, which is what they appear to be, I don't see a problem with loading up the hinge... but if they are gas struts, then loading up the hinge could be a problem!!! :scratch: