I agree go, 100gr for sure. Those broad heads should do ya. You could do worse thats for sure. Welcome to the sport. Tons of info here just keep readin you'll catch on and I'll be glad to help you out as much as i can. As for the arrow type, yes your arrows need to be spined correctly for the bow and poundage you are shooting in order to get good arrow flight. you'll get stronger as you practice so i would error on the side of a stiffer spine.