I'm not a Big Banger, either. But one day it occurred to me that there was a fatal flaw in the Big Bang theory that was so huge that I wondered if I was missing something.
BTW, I'm an electrical engineer, too. Right now I work at a manufacturing facility keeping things running.
I knew you were not a big banger by your posts. I am mathematically lazy at this point in life (use it or lose it) so I couldn't check the math without a lot of research. If your math is good the logic is sound.
IF there are REALLY such things as Black Holes, that are SO immence NOTHING ever can escape them, would not the OOOU (Origin of Our Universe) been the BIGGEST and the BLACKEST of holes?
How did all this STUFF get out??