Go big!...
You can do little work with a big lathe but not big work with a little lathe.
Mass is king in machine tools.
A 10-22 is a good way to go.
If you measure the distance from the compound to the center, that will help chose a tool post
I am partial to the Aloris style , specifically the wedge systems. They repeat better and are more ridgid than the piston type, but it might not matter.
I think an AXA post would fit, but I would check the dimension I mentioned first before I made a choice.
My AXA wedge of Asian origin can hold up to 2HP cuts on my Logan, so I think the 10" Grizz should be fine with it.
Best of luck and happy machining!
Dave