I would back the CaraRuby down to 10% or so (considering the other ingredients you have in there) and then add Carafa Special or Black Patent (debittered black malts) to get your color back up into the range that you want it to be.
curious about the cararuby. i was at the LHBS to buy some carared and found the ruby. i tasted them both and loved the ruby. I plan to do a red Belgian with this ruby.....
what happened with your recipe. can you post a pic?