You argument for the First Cause was one of the following:<quoted text>
No, although it is a possibility, that was not my argument. Read it again.
1. Infinite regress.
2. Uncaused cause.
3. Don't know.
4. Not God.
But so far you have stated that it can be any of the above, but the one thing it cannot be, absolutely is:
Showing that you are actually totally opposed to the idea of God, right from the start.
Proving the case, that you are indeed suppressing the truth of God as you cannot even allow the idea of God to the table.
Which is not rational.