manufacturing stuff

alright, so i have a harbinger, a capital armor rep, and a capital shield boost BPO. I researched all and the material required, for the armor module (most profitable,) is:

Kernite seems to be a popular thing to strip in high sec, leaving the rest of the asteroids laying around...at least here in Arera.
Eleven loads in a mining frigate would do it nicely...say two mining frigates means 6 loads. Do that easy enough in low sec. Not sure if the little things could tank or defend (with 2 drones a piece)