Type 10 AFK Build Help

I've recently tried building out and engineering a Type 10 AFK build, but I'm having issues not dying when AFK. I've stuck as many Guardian shield modules that I could fit and engineered all of my shields and boosters to have extremely high damage resistance. Yet even with 4-0-2 pips, I've died every single time (3 out of 3) I actually tried using it to AFK in Low zones with level appropriate stacked massacre missions (no skulls, Threat level 6 maximum, no optional objectives with additional enemies sent against me, constant right spin with AutoHotkey). It's pretty great otherwise at taking out small numbers of pirates in a low stress manner when played actively. I have a novice pilot flying a gimballed beam laser Gelid G.

I still run 3 additional ammo point defenses (2 on bottom, 1 on top) since I can't always find level appropriate transportation missions to fill my cargo hold, so it's easier just to grab some goods as bait from any station.

I run these missions out of the four stations in Gliese 868 all to LP 932-12, and hang out at the Low risk site on the ring of planet LP 932-12 B 5, report crimes against me off, staying 6-11 km away from the center point. Only had one instance where my ship inadvertently hit a system authority vessel and got the smackdown and subsequent fine (pirate still made a killing blow).

Yes, I know AFK play is terrible to some people and that I should be actively playing the game. But I have limited time due to family commitments and want to save up for a Fleet Carrier. Please spare flaming me out for this, I don't need a guilt trip here.