Could I just prime it and cover with monocoat?

I am worried about color match and may not have paint to match the color I go with.

Oh. One more Deadeye. What length servo extensions did you need (I could not figure out what the white pipe was until I realized it was for the exensions to the servos)

For aileron and elevator halvess, is S3004 sufficient or do I need S3010? I assume S3305 for rudder