That Milankovitch has nothing to do with glacial cycles, that those cycles are somehow driven by ocean currents and that there is no AGW but that the current observed warming is just part of the glacial cycle. Everything else you've brought up has been in attempt to support those two claims. Unfortunately, they do no such thing.
Going through your list:
Yes the ocean contains more thermal energy than does the atmosphere. It always has and always will.
Ocean currents move heat around the planet. So does the atmosphere. I would not call it a distribution.
The slowing of the AMOC will cause warming in equatorial regions and cooling in higher latitudes. The Gulf Stream and it's analogs in all the other basins is driven by Coriolis. They will not stop no matter what happens to global temperatures. They will simply no longer feed and be fed by the AMOC.
Density has almost no effect on horizontal movement of water. Thermohaline circulation is driven by high density water sinking at the poles. Density has no impact on the ocean's various gyres.
So, you began with claims with which NO scientists agree and then attempted to support them with a scattering of factoids you looked up that you poorly understand but that you think sound as if they're related. However, in fact, they provide no support whatsoever for your idiotic contentions.