I say go for it. The atoll formation is a popular choice. You should try it because you wont know if you will like it until you at least try. now is the time to make any changes so give it a shot.
I agree with NanoNewb, you will tend to mess around with it a bunch of times until you are finally happy. I'm not 100% happy with mine yet, but im close, i'll probably move a rock or two to get it the way I want.
Good luck, I think aquascaping is one of the best and most fun things about owning an aquarium.