I'm too far out of the loop to remember what the best set up is, but that's an uncommon one. I haven't seen a lot that use Bullwhip over Goading.
Regardless, though, you shouldn't use a Tactical Mantle. You even went above the sTP you said you needed.
Here's the set I usually point people towards:
http://www.ffxiah.com/item-sets/196368
It's Lv.90 gear, so some things have changed. It has the notable shortcoming of only having 25% haste, but I'm sure you can figure out what to switch to get the last fraction of a percent.