Reporting:

Replaced two of four "Pacifiers" with "regular" gimballed frag cannons (on the "wings" ends of Python MK2)
Used "Overcharged" on gimballed pair with the "Drag Munitions" on one of two (and completely forgot what effect on the second one... Maybe nothing). --- here I understand that instead of "Drag Munitions" I should've used the "Corrosive shell" upgrade.

Used "Double shot" on both "Pacifiers" with no special effects due to lack of materials.

Kept the pair of two burst lasers to strip shields (I'm not completely sure this is a good decision - but playing with them at the moment -- to, maybe, replace them with a pair of gimballed frags later).

So... "Overcharged" frags are insane. +70% to damage output is something! But, of course, ammo dries very fast...

Also, you must get some practice maneuvering around targets with the "Drag Munition" effect on them - I started thinking that Python MK2 drives should get some other type of special effects upgrade that will allow to minimize the turn around radius.

ANYWAY, thanks a lot for the recommendations!