Doors & Door Construction or Design.

Help!.
So talk to me about doors. I am about to restart construction on my project. Not many things about the construction bother me, but the doors... Seems silly but it does.
Are door built up out of same materials as sides , either single sheet of plywood or composite build up (layers of ply and insulation and skin) really the way to go. I mean is the hassle of making door and fitting it with trim and all the processes and procedures really successful or should I just bite the bullet, and find "something" that is already available like a RV "escape hatch" or storage compartment door and adapt it. OR again biting further go to a RV manufacturer and just have custom door made for my project... We are talking about two doors, one on each side...
And what size door seems to be optimum.... I was contemplation a 28 in. wide by 32 in. high door. My chassis is based on a 56x108 inch design very much a copy of the "Larry & Diane" design Outback Teardrop. Since I have not decide on actual outside "finish" but am learning towards Filon (sp) for maintenance issues over polished aluminum I think that can be adapted to any door design I choose....
Its not a money issue (not that I have a lot) so lets stay away from that side, I really am more interested in practicality of construction. Is it easier to just buy a door and fit it or having to fabricate a door and fitting it ...
What would you do different in next build if there were one in your future...
Dale
So talk to me about doors. I am about to restart construction on my project. Not many things about the construction bother me, but the doors... Seems silly but it does.
Are door built up out of same materials as sides , either single sheet of plywood or composite build up (layers of ply and insulation and skin) really the way to go. I mean is the hassle of making door and fitting it with trim and all the processes and procedures really successful or should I just bite the bullet, and find "something" that is already available like a RV "escape hatch" or storage compartment door and adapt it. OR again biting further go to a RV manufacturer and just have custom door made for my project... We are talking about two doors, one on each side...
And what size door seems to be optimum.... I was contemplation a 28 in. wide by 32 in. high door. My chassis is based on a 56x108 inch design very much a copy of the "Larry & Diane" design Outback Teardrop. Since I have not decide on actual outside "finish" but am learning towards Filon (sp) for maintenance issues over polished aluminum I think that can be adapted to any door design I choose....
Its not a money issue (not that I have a lot) so lets stay away from that side, I really am more interested in practicality of construction. Is it easier to just buy a door and fit it or having to fabricate a door and fitting it ...
What would you do different in next build if there were one in your future...
Dale