You definitely need to take weight into account doing an overlanding rig. I actually have everything added/subtracted in an excel sheet to keep track of my allocation. A 2 door would make this really hard and I'm happy I went with a 4 door. I removed the back seats to save on weight and increase room. Also make sure to mount heavy items as low as possible. For example, I have my house battery, charger and water tanks at the rear footwells. I highly recommend air bags in the rear as well to level out your rig since most of your added weight will be there.