[villagetinker]

T&D has a very good reputation. I would get at least 3 estimates, but sure ALL of the estimates are based on the same scope of work. If one of the bidders mentions something the other did not, go back and check. Then confirm the expected construction schedule, T&D seems to run longer then others.
Finally, talk to your neighbors and see what they did. We extended the lanai, but into a bird cage. As I showed it to other neighbors, they said, Oh I wish I had thought of that when they had done their project.
One final word, just a suggestion, talk to the Sumter County building department about what you want to do. These people are great, and can provide guidance that will go a long way to smoothing your project, I know they helped me.
Hope this helps.