You will get a lot of advise regarding your Tundra and what it is capable of hauling as far as a camper is concerned. Let me just say that you will possibly not be able to find a camper with a bath in a weight that your pickup will handle. Check your drivers door post to see what the GVWR and other weight capability that you truck allows.
Most trucks have a sticker in the glove box that states what your maximum hauling capacity is. This will give you an idea as to how large a camper your truck will handle.
Most truck campers that include a wet bath will weigh close to 2800-3000 lbs when loaded ready to go.