It's enough ! Mathews warrenty covers 5 grains per pound and up......so your right on the line !

I hunted for 3 years with a 5 grain per pound set up and killed a lot of deer ......with pass through shots on all but a couple of shots that hit heavy bone !

However , I will say.........that your bow will be noticably louder with that set up !! It may be quiet enough for you ! I switched to a 450 grain arrow and my Outback is significantly quieter !

But to each his own !