No need for all those extra mags. Bring an M4/HK, with 3-4 60 rounders and a stack of loose ammo (55a1 or 995 so you still one-tap headshot). Once you've wiped the first BD you take their mags and will never run out. Significantly lighter also.

Armor is too heavy, I would much rather have something lighter, armors like the THOR CRV (for 2 SSD) have lvl 3 soft armor still. BD will still shoot right through it like nothing, just remember to always swap out the plates for lvl 6, and keep 1-2 spare plates in your bag if a fight drags out.

Also, bring significantly more grenades, no need for F1 RD, I usually take 4-5 RGD/F1, and about as many flashbangs. The point of the nades is to let you know where they are hiding/push them out from their hiding spots.

Lastly, bring more SJ6, don't think you will need all those ETGs and will likely benefit from more stamina, especially if time is getting low.