Super nice design! I really dig the colors.
A few things to keep in mind.
The flack vest cannot extended past the waist items per CRLs. So while the kama and flack vest can be made out of the same material they will need to be 2 separate pieces.
Just ensure that when you make the helmet that there is solid cheeks under the cloth. Ruling on that can be found
here.
If you haven’t yet found that mentor blaster take a look at 3dprintoys on Etsy. He has very nice one for sale.
You’ve got a good start, keep it up!