I Think positioning the drum kit would be a lot easier if you had a double bass set-up. There's no easier reach to the tom's than having them right in front of you (at the center of two bass drums). Either that or getting a separate tom holder would do. I always keep my snare flat though.
I prefer the ride cymbal being a little far (Somewhere over the floor tom) since that makes it easier for me to play blast beats (Honestly, I don't know why.. It feels good)
In regards to the cymbal height, I need it to be 1.5ft above the toms at a straight angle (Crash cymbals only)..and the china right above the ride. I think I've got a good set up for now (did it last night), but I guess I'm gonna keep making changes till I find the Perfect position.
@DA-Drummer: Thanks for the link, that set up helped. Bedene's an amazing drummer too!