In Indy, vinyasa is used as a general term to connote linked breath to movement. Some classes will be harder than others. By harder, I mean more advanced poses and/or a faster pace. Just try it. You may like it, you might not. For me, a lot depends on the teacher and the setting/studio. I'm finding fewer and fewer teachers who actually teach proper form, which is a real shame. If I were you, I'd try Ahna Hoke's classes. She's big on proper alignment.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher