RE: Prop question
Hi Scott -
I wouldn't hesitate to use the MA 11x6 prop with that setup. I have noticed that the Graupner nylon props I use have a much wider blade area than their APC electric equivalents, and seem to have a lot more bite. You're also going down in pitch which should give you a much more authoritative pull.
I wouldn't worry about the extra prop weight, except to re-check your center of gravity. The extra weight should only put more load on the motor while you're spinning it up to speed.
I would not, however, drill holes anywhere, in any prop - that just sounds like a recipe to throw a blade off! If the weight is a great concern, look into the MA Scimitar in that size - it's sort of in-between an electric and glow prop (and they just look darn cool). I think the weight would fall somewhere in between, too.
Dan.