If you are shooting that well, don't change a thing. You will kill a deer from a treestand with that setup, if you do your part. If you want to play around with adding weight, try weed-eater string. It is much cheaper than the weight tubes. If I remember correctly, I added about 25 grains/string (approx 25" long), and I could fit 3, maybe 4 strings into my GT 5575. Keep having fun!!!

Good luck,
JMAC