I really would like to tank, but

[SpookyGhost]

I tend to pull into a flash, CoS and flash again into FB > SB and then target a different mob for Halone, and repeat.

This is good, however now that you're @50 you'll be seeing a lot more AOE heavy DPS so just a double Flash won't always work. The better your weapon, the less Flash you can get away with, but if DPS start AOEing then Flash like it's your only button.