I am getting a 5X8 utility trailer to renovate to a camp trailer to pull behind my honda SUV. It has a swinging back door. I would like a rv type door on the side. How hard will it be to install such? I have watched how to install windows and see it is pretty easy. Would a door be similar? Any recommendations on where to buy from? I dont believe we have RV salvage any where near me. I will probably have many more questions although am planning on a pretty simple build and watch a ton of YouTube. Thanks.