Sorry some of this doesn't make any sense to me because of my level of english or there is extreme confusion?

What I can't understand is why all the Newtonian equations trying to understand Gravitational Potential Energy we all do realize they are wrong and won't make sense at this level ... right?

If I am understanding you correctly what you really need to look at is Bill S's favourite the somewhat scary Friedmann equations
(http://en.wikipedia.org/wiki/Friedmann_equations)

Go down to the bottom section they do a rescale for you if you can't do the maths and there is effective potential energy for something in space.

I think that's what you are trying to work.

Trying any of this with newtonian law is ridiculous it's a given it's wrong.

I believe in "Evil, Bad, Ungodly fantasy science and maths", so I am undoubtedly wrong to you.