The 13 pt I shot a few years ago we got 82lbs of meat from........a normal deer around here yields near 60lbs......the smaller ones you get somewhere near 40lbs.
It's not worth the wait
You also shot it in gun season. AKA post rut. If the buck was 3 1/2 as you claim he would have been packing alot more weightup until thefirst week or so of November.