This is a pretty dang good combo. I might be inclined to throw in some diodes ranging from 400nm to 440nm instead of just ten 420nm, and one cyan instead of one lime.
Sounds good. I have everything but the cyan and other violets but those are easy to come by.
The violets I use go from 410-430 with a peak at 420 so I stick with them since they cover the gap to my 445-455nm royals pretty well.