I had 44x skill speed once upon a time (Liberator + HA pants, wooooo). The goal is to hit Invigorate as soon as you drop to 440 TP (450 can be awesome if you know exactly what you're doing, but 430 is too late). For best results, get a BLM-like spider-sense to time it with the TP regeneration ticks so that you get the full 60 TP out of that.
Testing this at 464 skill speed, I can just barely be riding the ticks a few GCDs before the second Invigorate. If you're lucky, things will still slow down enough that you're mashing the skill waiting for the regen, but not so slow that the rotation gets misaligned.
This is my cross hotbar setup, although I have switched PPP and Piercing Talon after putting these screenshots together (oh, and I leveled monk, too, so now Mantra occupies where Foresight used to be). The difference you will find from most controller DRGs is that I put cooldowns next to the GCDs they come after in the opener; it makes the execution very simple, I think.
Also, I use expanded controls so that I access set 2 with LT->RT and RT->LT. This is fairly handy when using the STR potion, for instance.
