Hey, so it's been almost a month. But hopefully you're still playing here and there. If your base upgrades to lab, church, or factory, it won't change again, unless you get the rocket.
Church: High Faith
Lab: High IQ, (135ish)
Factory: (The hardest) Research cars before upgrading to the church/lab. So, Get batteries, oil, and metal at relatively low IQ.
That's as much as I understand of the upgrade process at the moment.