What path should i take to become an Army Infantry Officer?

Hello all i was wondering if i could get some good insight on how to become an Infantry Officer in the Army. I am currently enlisted and in future soldier training, so i will go to basic prepared possibly as a E-2 i have a GED and plan on going to collage while active. Now i hear its hard to go from National Guard or Reserves back to Active, is it the same for Officers? Or should i stay in Active and slowly get my 4 or 6 year then go to ROTC or whatever. Anyone have experience in this? or some good insight?