Aroostookbasser has it right. Get a bow that fits, get it set up properly, and practice as much as possible. My biggest recommendation is to not to fall for the "faster is better" mindset. Keep the arrow weight up and the bow will be quiet. To beat a whitetail's reflexes at 25 yards, an arrow would need to be traveling over 400fps, and that's just not possible, so far. If your rig is too noisy, the deer is moving before the arrow gets there, and that's not a good thing. Keep it quiet and know your abilities. The anti's don't need any more ammo.