Hello- My wife and I are in the murky waters of searching for a fifth wheel 30-32 ft well built and insulated w/ thermopane, etc.,etc. We would appreciate any thoughts or pros and cons of wood structure vs aluminum; top deck AC vs heat pump. Is anyone familiar with Space Craft Mfg ? Our plan, at this point, is to find the RV and then decide on the appropiate tow vehicle to carry and house us throughout the lower 48 and Canada full time. We are making the leap as fully qualified starry eyeds. We look forward to any helpful hints you may muster. Thank you- P&M