ApeMan you have a lot of holes in those parts!
The trouble with bead blasting tapped holes they will need to be plugged.
Is your customer acceptable to design change, such as a grove instead of holes?
If so that would reduce the machine time dramatically, while improving the part and finish quality.
Also are turning and then milling? You can get a better finish turning then milling!
sI have machined several parts out of various material types for gas turbine engines. I had to find ways to eliminate tool marks
and for the most part was pretty successful. Tumbling should be considered as the last finishing step after debur and hand finish.
Hope this helped !