To be clear, I’m not endorsing the crafting or item acquisition system, to the contrary, I don’t like it either!
What I am suggesting is that it’s cheaper to buy off the Armoury Exchange as/when you’re able rather than give Brunt all of your dockets. This is objectively and demonstrably true.
This is true whether your play 40 minutes a week, or 40 hours. Case in point, I just picked up the new revolver:
It takes me all of 30 seconds to check all of my stores between matches, I saw it sitting there, so I snagged it up. For me, the rewards for doing this out-weight the absurdity of having to look to third-party tools as a compensating control, and I can totally understand if for some, it’s just too onerous.
As to Brunt, well here’s another post where someone has spent 1.5M dockets trying to get one of the new Las Pistols, and ended up with only 4 of them with 370+ base modifiers.
That means he spent 375k/pistol 
…
Anyway - sorry if this isn’t helpful to you, and I wish you all the best.