OK, I'll try not to get into your detail there, lol, but I hear you saying that the universe had a beginning, it came from nothing, and you have imagined a logical way, in your way of thinking, for that to occur.
I don't see the logic.
There can be preconditions to the Big Bang from which a Big Bang can be speculated to occur without resorting to "something from nothing". If you want to go with "something from nothing" you need to have understandable logic to get to "something". I don't see it.
We have evidence of one big bang. That is my evidence for speculating that there could have been multiple big bangs, and from multiple big bangs it is easy to derive big bang events occur from those preconditions.
We don't really have evidence of a big bang. If you have infinite Aether, it doesn't bang outwards, it collapses inwards, and that is going to look a lot like a singularity. The Aether then bumps until it switches from +1 + -1 to -1 + 1. It inverts to remain at zero. This inverted particle can pass through a positive particle because the hole in on the outside, and the hole will just cut through matter.. well it's a hole in matter. So now the particles shoot out of the hole.. this looks like a big bang. So what I have is a singularity, and a big bang, but caused by an implosion... and it's not the big bang, because this has gravity reversed, and is an implosion. This is the bump gravity version that looks a lot like the current version. So there is no proof of a big bang if you can reconstruct it in another way. But I have explained the singularity, gravity, the implosion, and all of the physics, and accounted for Before The Big Bang.