If you're shooting full length 2117's, aren't they sticking out 3-4" in front of the bow at full draw? If so, couldn't you get the same performance out of a lower spined arrow cut shorter? If you could, your arrow weight would go down and your arrow speed would increase. 600 grains for a 50 lb bow is 12 gr/lb. Nothing wrong with that, but as you say, the trajectory will be high and your shooting accuracy might suffer at any distance other than the one you regularly practice at. I just can't see you being happy with that in the long run. I would try 2115's, 2018's or 2016's until I found an arrow that would shoot right when it was cut about an inch longer than my draw length. If it were me, I would like to end up with a 500 grain arrow, which would be 10 gr/lb of bow weight.