You should flash in between your combos as well. And really if you have rage of halone available use it fully. Never just go half way. But yeah do a full rage of halone, then flash and repeat. When I was leveling gladiator/paladin I had 2 friends that were doing rog/nins at the time. And they usually picked different mobs to attack. That was some good training for me to keep aggro off them.