It's probably too late for you now, but you do want to throw a small amount of the grain into the rice while it is boiling. That helps it from getting too gummy. You want to break the rice up as much a possible, like putting them in a bag and hitting them with a hammer.
I used 11% wild rice in the lager I did. I was surprised that it gave more of a floral flavor then a nutty one. I would have guessed the it would have been more nutty.