If you want to do this I would recommend some kind of pre-made setup like that to start with. Start small and work your way up.

Honestly, I would learn to fly to a high degree of precision without the extra equipment first. The extra equipment really complicates things. I think I'm a pretty good pilot and, frankly, I don't think I could pull this off.

Place a question in the aerial photography section as well. I'm sure many of those guys could give some really insightful information.