Dragoons: A Rotation Reborn

[DxWings]

I didn't want to create a new thread so I'm going to ask it here and hopefully get some answers. I finally got started on playing a LNC. And at lvl 15, I have access to the True Thrust combo, and Impulse Drive.
In terms maximum DPS at that lvl, would be more effective to go,
HT-ID-ID-ID-ID

Or

HT-TT-VT-TT-VT

I'm only thinking about this through potency since I don't have actual numbers to work with. At this lvl, I get ID which has a potency of 180 from behind, TT(100), VT(200 comboed).

So for every two GCD, I get 360 Potency from ID, whereas the VT-TT combo only gives me 300.

So would it better to go with ID or TT-VT for maximum dmg? (This is my real question)