That sounds very similar to my set up and at a very comparable height, it's confirmation to me that it's probably the best ergonomically, out of all the various permutations.
I have the GT bars which I think work very well, but i'm interested in your handle bar set up.....Am I right in thinking that you're using the R bars but with some risers ?
If so, i'm interested to learn more....Like, what risers have you used...and...what wiring/cable set up have you used?