James, please note that if you use gels for color, you lose some (or a lot) of usable light on stage. The more saturated the color, the lower the amount of light is transmitted. Roscoe and Lee (and probably GAM, too) publish those specs. You should keep that in mind when thinking about the actual luminous intensity reaching the stage. If you are using an LED source, you might not (probably won't) have all of the different emitters at full in order to get the right color on stage.
I'd rather have more lumens available than "just enough" neccessary to do the job, but YMMV.