Add in stats for all+one for all on the pulse. I dont think firefly is the play as pulses shine in harder content where its harder to get firefly to be valueable beyond a reload perk in that content. I also cant get that well behind vorpal on a primary.

The scout can also roll stats for all+ofa which is like bread and butter and will give you a reload perk. Explosive+frenzy is probably the more consistent combo to go for though as itll be similiar to ofa on its own and frenzy, beyond the damage boost, is going to be about as useful as sfa is. Id also say that enhanced adaptive munitions + frenzy is a pretty neat combo as usually we see adaptive in the same slot as a damage perk and, again, frenzy is a great reload perk aswell as ofcourse is a damage perk so anything paired with frenzy is extra and you have it for essentially free which is amazing utility.