So, the only difference between getting a 6 speed 14-28 freewheel, and the 7-speed 11-28 or 11-34 would be that I'd have to get 7 speed shifters, and a small increase in price? Would that upgrade be worth it to someone that's brand new to the sport?

Of course, that means that I could also buy brifters, which they have for 7-speed bikes... which was the original idea. However, that's looking spendy.

P.S. Seriously, I know I'm asking some ridiculous questions, but I really do appreciate everyone that's answering! I feel like every day I go home, I know more and more about my bike!