Well, I would say refletch your other arrows so you are not just working with three! IMO, you are very unprepared. I would suggest having AT LEAST a half dozen arrows on standby for hunting. What if you miss twice in one sitting? You then only have one arrow.

I would also recommend sighting in your bow with the arrows you plan on hunting with. I had a bad arrow this year that would always fly 6" to the right. I knew that my bow was tuned and I was using the same BH so I knew it was only the arrow. I shoot every arrow with the same broadhead (acts as the control) to ensure my equipment is PERFECT for hunting.

Good luck.