What is your draw? The length of your bow really makes no difference. Your draw and the weight at your draw are what is important. I shoot Legacy 1916's with 150 to 170 grain broadheads. With 170's they will weigh about 510 grains. 2016's would also work for your setup. You can trim them to length and play with the point weight to tune.
I shoot the 1916's trimmed to 29 1/2" for my 46# Kanati or 29" from my 51#. I draw 28".
I shoot 50-55 port orford cedars in either bow. It will depend on the batch how much they weigh. You can sometimes request heavy arrows from your supplier.