CNC would have been best, which will leave the Boss supports as well.
Note, got to love Mach 3 for a home CNC machines if you want to just do the cuts as home.
Quick drawing for cut dimensions, run it through Lazy cam to spit out G code for Mach 3, and let the machine have all the time it wants to go about it business instead.
But yes, rotary table for the front radius to match the RMR front Radus looks a lot better if you are working the mill by hand isntead,