I see people full timing in just about everything, from Casitas to diesel pushers. They all seem to work under the right circumstances. However, not knowing much about TTs, I'd invest in a membership with 
RV Consumer Group. They rate RVs with regards to safety, economy and reliability... quite a time saver. Some folks don't place much value in their reports. However, a 20+ year history in the industry is a strong testament that many do. They post ratings for new and used, which is particularly important now that the old brochures have long flown off the shelves. The cost of membership is a pittance relative to the overall expense of a camper and your budget will go further with a gently used quality unit. I used their ratings in '03 when shopping for my current camper and will use them again next year for my retirement choice. If you're in Austin, TX, you'll want a well insulated unit to handle the heat during the summer. Good luck.