How to have success in a Insane Archana campaign?

I’ve been trying to challenge myself with an Archana campaign, and I run into the issue where it’s almost impossibly hard to turn a profit. I get 300% + suitability, ridiculous reliability, comfort, prestige, I lower margin and it’s still barely bought.

The best I’ve managed is to maintain a profit of like 50k per month, with barely 20% margin on a delivery/ute that sells for 8k that I spent 80M developing to be as suitable as possible. I know the best strategy is to wait until Fruinia becomes accessible at 1970, but is there any way to survive/thrive on my own merits before then?