Looks good, just make sure you find struts that will work with that. I originally planned for gas struts but they put way too much strain on my stainless steel hinge. With your design, if you haven't already, look into trayon's camper design. There are some key aspects that make those work extremely well and are easily overlooked.
I will let you know ahead of time if you plan on doing the fabric portion yourself... that will really slow, tedious, and you down and make you want to quit. I am also looking at your measurements and that is going to be a monster!! The only advice I would give you, is make sure you have depth to tuck your tent portion for when you close up the camper; I can tuck the fabric fine, but I would have wanted more space. Last pointer is ... find a huge garage or warehouse to have it staged and built up.. a one car garage makes it 10x harder to do.