Where is your training? Monastery is about 30-40 minutes from the city. The monastery has a great selection of tools, pots, books, and accessories. The trees are also very nice but lately they have had no prebonsai type stuff. I go there for soil admendments often. The whole monastery grounds are very nice too. If you have time it is worth a trip.
If you have time I would recommend plant city bonsai if you want some cheaper stuff to play with. It is in North Georgia and at least 90 minutes from Atlanta so a much bigger haul. Says you are in Tennessee so it may be on your way as it is close to the border. They carry a lot prebonsai stuff and the owner is very friendly.
If I have to pick one then I would pick Plant City but both are nice for different reasons.