Nice list of mods. With those mods you might actually benefit from a CBE beyond just a change in sound!
Have you dyno'ed and if so where are you in hp and torque? Excuse my ignorance regarding the corksport DP/RP, but are they catted or catless and are they 3 inch diameter or stock diameter? If you have 3 inch DP/RP with your mods it might get you a little power to up the CBE to 3 inches.
I'm staying with the stock CBE connected to my 3 inch DP/RP because I'm not quite as far along in the mod process to benefit from the extra flow.