I tried to CoC onto the CoC marker in my new world space and it wont load it only interior cells.

Just in case, you can't just type CoC worldspace, you need to give the cell coordinates, like CoC tamriel 3, 4 , to go to the celll (3,4) of tamriel worldspace.

Use COW.

COW = Center on World
COC = Center on Cell (interior)

true. I forgoten that detail, is CoW worldspace XCell, Ycell

I could be wrong, but I think if you rename your worldspace cell (instead of the default wilderness) and place a coc marker there, you can coc to it. Been a while since I worked on a worldspace though, too much of a pain in the ass dealing with the navmesh grid crap.