Take them one at a time, if a wing of three go for the biggest guy first. go with good shield and hull reinforcements
Npc's don't like it if you fly straight at them shooting. The thin profile of the of the kraits helps.
Oh, and yes actually have all size 3 beams on b1, and burst lasers on b2. The bigger the dps the better.
I always go head on beams a blazing..." A joust of beams at full throttle "..

And usually the smaller ships will go ...pop...quicker. Follow the bigger security npc's for help.
I call it shadow patrol, follow the big anaconda's.
In a REZ, I wait for the pirate to come up and take a good look, usually I carry nothing, just limpets.
One stole some once. They insult you and roll exposing the belly of their ship as they turn to leave.
It gives you time to target internal systems. I get easily offended, so that is when I fire first, taking their shields.
They most always turn back for a fight.