Maz, nice bow there. I would start with arrows 26" long and around 35# spine. About 400 grain arrows should shoot nicely from that bow. You could even start with your arrows around 28" long and if they are too weak go down 1" at a time. Do you know hot to tell if the spine is too stiff or not, Left is too stiff, right is too weak. If you are a right hand shooter. Steve