Proving God Existence

[LostLocke]

Pretty much this.

One of the first statements by the OP involving these 'proofs' includes the statement...
"Assuming time is infinite."
.... which is not indicated at all by anything we know about the universe.

Everything we know today currently points to time beginning ~13.7 billion years ago.

I have a feeling the OP won't quite grasp that, but, meh.
Not really our problem is it?

The universe post big bang is finitely old, but as we know nothing about the pre-big bang universe, it may or may not have infinite age. But it is still a faulty assumption.

Yes, this is true. But now we're getting into 'weird' technical details.
For the purpose of the OP, I'm assuming he's talking about 'time as we know it within our universe'.
Even if there's time 'outside' or 'before' the big bang (which they may not even be), it's not 'our time', and may not function in a linear fashion like the time we know.
Which I guess again, would knock out the "time is infinite" assumption.