Off topic a bit, but I would suggest getting some of the GT insert weights. They screw in from the rear and you can change them for lighter or heavier with GT's long (36")hex wrench. I believe they're available in 50gr and 100 gr, so with an 11 gr standard GT insert you can go up over 335gr, or down to around 110 gr total up front with 100 to 225gr points.
I normally use hot melt glue for my inserts, but if you wanted to epoxy up the inserts and some sleeve footings for stumping arrows, this would still allow you a huge range of flexibility.