I am 19 and fell in love with cycling this past summer. I a currently a sophomore in college, and have quite a bit of time to train/workout. The only problem is, I am not sure what would be the best thing to do for me. I could probably do an hour or two a day, right now I work out about an hour a day. I either swim, run, do machines at the gym, or of course spend time riding on the trainer.
I am 6'4" and about 160 lbs, so losing weight is not really important to me, in fact I would love to gain some muscle mass to become stronger.

Any suggestions?
I am not just looking to get in great cycling shape, but also great shape in general.

I figure, if I have a bunch of free time, I should make the most of it and not just blindly workout every day