Just keep in mind that if you are playing a dynasty w/ a teambuilder team there are some serious disadvantages. Here are a few off the top of my head:
- Can't use the editor
- Lose your rivals and only get 1. Don't remember if you get to pick it or not, but you'll lose all others. GT has VT, UGA, Clemson, and GSU (seriously EA?) as rivals so you'll lose 3 of them.
- You lose all other team history for your team (alltime record, bowl record, conf chamionships, national championships, etc).
There might be other stuff you lose. To me, that sounds like a LOT to lose just to have uniforms that are closer to how they look in real life in 2015.
That said, it's your game so have fun with it however you want.