Well, my first advice would be to not strive to achieve Mike Kelley or Tyler Grundvig level quality out of the gate. They are awesome and make a good living at this stuff. Mike is the king of the flash, and Tyler rocks the HDR with a smattering of flash.
I would first read all you can here and on photographyforrealestate.net. Then find an agent you can do some free or greatly discounted jobs for to practice. They "good" angles will come naturally the more you shoot and the more you learn.
Make sure and check the market you're getting into, too. I live in north Texas and there are a couple guys who have driven down the pricing to about half of what we "should" get paid. I don't rely on this as my only means of income so it's not huge for me, but it might be for you.
And most of all good luck!
Thanks for the kind words!