I can`t help but think that your bow would be quieter, and more pleasant to shoot with a heavier arrow.
Maybe your bow is already plenty quiet. Maybe it already produces a pleasant thump when the string falls.
If so, whitetails should be in trouble if they wander too close.
I have young sons, and last fall, my twelve yr old killed his first traditional deer with 39 lbs, and a 410 grain arrow. Plenty of punch for close range.(15 yards)
I have been hunting with traditional bows for almost twenty years, and for years I shot arrows that would be considered light. From the spirit of trying something new, I began to experiment with heavier arrows. It was then that I found out the benifits of heavy arrows.
Quieter bow, more forgiving bow, better penetration on game, and more pleasant shooting.
Ten grains per pound is the common formula. Works for me.
I hope you feel "up to it" this year. I hope your longbow gets a chance to speak.