infinites dont exist. so space and time are finite? be careful.. 
There would have to be something outside of God? well, the concept of God... an eternal, infinite, supremely good being.. If you accept his existence, then there is no need for something outside of God.
If you accept Space and Time as infinite and eternal, then theres no need for anything outside of them.
If space and time are not eternal and infinite, I see even more necessity for Gods existence.
energy could very well be eternal, eternal is referring to time, infinite refers to size different dimensions. There is no reason space cannot be finite, why would you think there is? in cosmology it is known based on mathematics that the universe is expanding into nothing, by definition the universe is all that exists.
"There would have to be something outside of God? well, the concept of God... an eternal, infinite, supremely good being.. If you accept his existence, then there is no need for something outside of God. "
well an sentient being living in eternity makes no sense, how could he act? action is a temporal term. If he is infinite then he is not whole, its obvious he is not supremely good.
I also dont accept your definiton of god, you have to prove these qualities based on axioms, that some super powerful sentient being lives outside the universe, in eternity creating everything. Energy can neither be created nor destroyed as you put it, hence it always was. You somehow misconstrued this to ask the question who created the thing that cannot be created ie energy?
There is no good reason to believe in god, and no good argument either. However, there are numerous good arguments against.
also based on quantum mechanics something can come from nothing, further lessening gods need.
We know that things tend to get more complex as we go along, so what you guys are prosposing is the exact opposite, before even the simplest thing there was the most complex thing ever ie god, it again is non sensical
