So the ranged abilities on ur scoundrel are gonna be very powerful at lower levels and should be used to maximize DPS. You also need to use ur melee ability to earn upper hand early on as well.

Here is what I suggest: keep ur DPS spam using only melee abilities (non cover abilities). Make a separate mapped key for the higher DPS cover abilities. No here is the complicated part, make sure that ur DPS spam is used in conjunction with an auto follow (I prefer Mercbeast framework type). Separate from the auto follow, make another on demand follow mapped key that will break cover for ur scoundrel (strafe or jump then follow). This way if you need more DPS u activate the cover ability and when done u manually follow and the scoundrel will break cover and begin using auto follow.

This all very complicated I know, but I'm all about finding solutions to maximize the potential of my toons.

Good luck!