Fine tuning
Already dispensed with. Even if you could show that there's some "tuning" necessary here's the problems you open up:
1. You have not provided any evidence that it is "God" that set the values.
2. You have not provided any evidence that the values could even be different
3. You will then have to explain why God is CONSTRAINED and couldn't create a life-containing universe with different constants
In other words: you have no explanation. Yours is exactly equivalent to the "multiverse" hypothesis.
Also Aquinas five ways makes a good argument albeit more simply but no less effectively. Ive yet to hear a solid refutation of it.
The Argument from The First Uncaused Cause is weak as fuck. It's nothing more than special pleading for "God".