A potential argument for existence of God

[paulpablo]

Hi everyone, 

So last night, before falling asleep, I thought of a potential argument for the existence of God (and this isn't the reason why I believe in God), and would like to see feedback on whether it's a good argument or not and why. So this is how it goes:

The universe had a beginning. Therefore there can be only two possibilities: either it was created from nothing, or it created itself. The universe couldn't have created itself because it was nonexistent before its creation. And if it was created from nothing, because nothing existed, there were no factors to narrow down creation to a certain kind of thing, and thus nothingness had an infinite amount of options to choose from to create something. We know that it did choose a particular one. Therefore, by choosing a particular one, it (nothingness) discarded all the other options. Hence, nothingness has an inherent quality of picking certain things and not picking others, and also the power to create its chosen option. But how can nothingness have such qualities of power and choosiness; it is nothing; it  has no quality or disposition! If nothingness does indeed have these qualities, then it is no longer nothing; it would be a powerful, choosy being that has the ability to choose freely (because there are no factors to limit its choice) and hence has a free will, and is uncreated. Sounds a lot like God!

Keep in mind that the resulting "nothingness" with its mentioned qualities does seem to match with the Islamic concept of God, because in Shia Islam, Allah (God) is nothing but His Qualities; His Qualities are Him, and are His Essence.

The problem I have with the argument is that still nothing is explained.  We don't know how the universe works, we don't know what nothing is.  We don't know how a god could make something from nothing unless he made the universe out of a piece of himself, which would mean we, and all the rocks, computers, toilets and pigs of this world are all just slices of Allah.  And I imagine the thought of that is pretty offensive and unbelievable to Muslims.
Or Allah just manipulated something already in existence, in which case it still doesn't explain how that thing came into existence from nothing.

We still don't know how a conscious being could make a choice outside of time and space. 
It's really a problem that still remains a problem if you put god there or not.  Unless you say god is just magic and can do anything in which case you could just say magic exists and then it could leave endless possibilities open.
It could be that you're the magic creator and you made everything because you were bored of being alone and you erased your own memories of it.
  It could be that an army of magic elephants shot the universe out of their trunks.