Just bought new prime black3. 27.5” draw 65#’s. Need to get new arrows. Help me with what I should get. Used to shoot Mathews z7 with Easton axis 400- underspined but I didn’t know the difference at the time. book says I should shoot 340’s with the set up. I have a buddy who has 1/2 dozen new axis 300 He’d give me for free. Is that too stiff? Im far from knowledgeable on this subject as you can see. Mainly hunt whitetail in MI but going on first elk hunt this fall. If I can save some cash on the 300’s and get them to work thinking about using the savings to buy iron will broadheads. open to any suggestions on arrows/inserts/vanes/broadheads everything about the set up. I know I want to use lighted knocks as the only requirement