This is just a hypothetical as i don't want to breed for at least another year if at all.
I think that you are correct with this. Just remember that the grey will be greygreen.I'm not a mutations expert, but I'd like to give this a shot.
The **** bird appears to be opaline spangle cobalt grey and the hen is lutino.
Since green is dominant to blue, 100% of the chicks will be green series unless the hen is split to blue.
50% will be males split to ino and 50% will be females not split to ino.
50% will be males split to opaline and 50% will be female opalines.
50% will be spangles and 50% will be normals.
If **** bird is single factor grey, then 50% will be grey and 50% will not be grey.
If **** bird is double factor grey, then 100% will be grey.
I used this website to compute the percentages. http://www.***************/colorsguide.html.
I hope my estimates are close, if not dead on.