Just some general suggestions/opinions:
1. Trying to find the ideal RV within 7 days will have a high probability of picking a RV that will not be a good choice. Give yourself a more realistic time line.
2. What size of RV you choose will depend on the tow vehicle truck you have. towing capacity, size of engine, 1/2, 3/4 ton truck etc etc, age of truck.
3. have your hitch attached/welded to the frame not the bumper, especially if your are going carry a motorcycle in the bed.
4. buy some aluminum ramps to get your motorcycle on/off.
5. use only 10 ply at least "e" rated tires
Your dream sounds like a great adventure, good luck:)
