You and I basically have the same TT. Mine is a 2007 25RKS.
I have an Equal-i-zer system. I have the 1,000 pound bars.
They told me the 800 pound bars were not enought to effective and the 1,200pound bars were too stiff and would be a rough ride.
I have used this set-up for the past two years and I absolutely love it.
I hope this helps you.