I build cabinets for work and there is nothing I like about the way they built the cabinets in my new TT. I understand the weight thing but the 1/4 in ply chelfs is not something I would store allot of weight on as far as can goods and such without adding some more support to them. I'm going to add some adjustable chelfs where needed while I'm at it. Its not going to add up to very much more weight. If looks matter to you I would try to build the doors to match what you have. Just my thoughts and maybe Im wrong.:)