Question about Bards and buff cooldown usage/practice

[LunarEmerald]

As soon as the boss fight begins and the tank has started hitting the enemy, I throw quelling strikes up along with every single buff and go all out. By the time, the abilities are off cooldown, the boss is down to 20% and ready to be finished off with them again.

I rarely use buffs for trash. It's a lot easier to pull aggro by accident with them.

To clarify

I open up with straight shot then put up my dots then do quelling strikes then apply all my buffs. From there, it's my normal rotation.