Sunny I would like to mention that using if you are using an Infusion pot, it may be more beneficial to use that after impulse drive as with lower skill speed (what we are aiming for) using BfB and DS may cause the earlier one or even both to fall off before the lance mastery strike which now is stronger but even before. This also means that DS comes up just before a lance mastery and BfB should miss chaos thrust and come under lance mastery also.