So, basically, you're using the standard, well-established strat. Is there any particular reason why you bring this up, or think it to be of general interest?
We nearly killed Sartharion+3 yesterday. We used about the same tactic as Neddie / Faol wrote. Same tank setup with me being MT. I got over 55k stamina raid buffed (pre-debuff) yet i still got 1-shot quite often.
The key is to have priests and paladins use their cooldowns (f.e. Hand of Sacrifice) on me. For this we moved to a different Ventrilo-channel, so we could communicate better. The reason why didn't down 'm with 3 but with 2 drakes up is because it took us a lot of time to see how important this very rotation was. Once we had it going on we did some very nice tries and had our healers not all taken the Vesperon-portal it would have been a kill.
Anyway, I'll keep you informed about any change in tactics, expecting a new title tomorrow to be honest.