Starting 1st foamie

Hey new and starting to make my 1st foamie. I all ready got an old pop up that I have stripped down to the trailer and am fixing rust spots and painting up. I will then be starting my build, most likely in the spring as it is getting cold and don't want to work outside too much. Planning on making it 7 foot wide by 9 feet long. It will be about 6 foot at middle and sloop down to 5 foot at front and back. The front will also come to a point to help with wind while driving. I will be keeping it straight lines to make is simpler, no round corners.
The outside will be canvas with titebond 2 holding it to foam then painted, just the norm.
Now the inside is where I am still thinking about. I am leaning toward using a primer on the foam then sticking screening down and covering that with rip pieces of paper bag material. This is for the look it gives as well as to match the cabinets (which will be made of foam too) that I plan on making using the same technique. The walls then will be stained if that looks good or painted if it does not come out nice. I think this should give enough strength to the interior.
I am looking forward to starting this as soon as it starts to warm up, yeah i know it is a way off but I enjoy the planning as much as the building. Will try to post pics and update as soon as this all starts.
The outside will be canvas with titebond 2 holding it to foam then painted, just the norm.
Now the inside is where I am still thinking about. I am leaning toward using a primer on the foam then sticking screening down and covering that with rip pieces of paper bag material. This is for the look it gives as well as to match the cabinets (which will be made of foam too) that I plan on making using the same technique. The walls then will be stained if that looks good or painted if it does not come out nice. I think this should give enough strength to the interior.
I am looking forward to starting this as soon as it starts to warm up, yeah i know it is a way off but I enjoy the planning as much as the building. Will try to post pics and update as soon as this all starts.