The Principle Of Sufficient Reason Yes, everything in TIME needs a cause, and you may argue that therefore the universe had a creator. But that's assuming that the universe ITSELF is bound of the laws of time.
So here's the conundrum: Is time within the universe, or is the universe within time?
If time is just within the universe, then the universe itself isn't bound by the laws of time. Think of it like a fish tank: ''being full of water'' is one of its properties, but the tank is not inside an environment that's full of water.
Likewise, the universe does not need to be in time even though everything inside is in time. As such, the universe can be perfectly described as uncaused and self-sustaining.
I agree with the premises of your revised PSR, yet I don't come to the conclusion that there is a God.