Thank you all for your helpful replies. My plan is to go WHM. I've managed to get to CNJ 30 and am currently at 13 ACN. Once I get some experience on healing with that job, I may go ahead and finish leveling ACN to 30 and try out SCH.

I didn't realize there were sooooo many bars. The one mentioned above with the L2 + R2 seems like it would be easier to switch around, so I will definitely try and get everything all set up before I jump into game again.

Again, thank you all for all the helpful responses!!