RE: What should my arrow length be?
There is no "Absolute" length for you arrows. Length will be dictated by bow, rest and your form. If you're shooting a modern bow with a large cut out window you can go shorter. Your broadhead has to beable to clear the riser. The type of rest will determine the best length too. In theory you arrowsd should be cut to clear your pivot point on your rest by about an inch. Fine tuning with paper might show you should tweek it one way or another, but as a rule..1 inch.