The RGB portion looks good to me, no single hue jumps out offensively so good job I'd say. Saturation i would maybe tone down just a little bit, but its a matter of preference and there is no right or wrong answer really.
From sharpness point of view you have some work to do, its not terrible but it could be quite a bit better. Cant tell if its collimation, focus, processing or the seeing but you can extract loads more detail from 8 inches of aperture if the kit and sky are all working ok.