Sorry if I'm repeating from someone else - I didn't have time to read the whole tread. I shoot small and young deer, so aging is perhaps not as important as it might be for others. BUT, I really like to have my deer hang for at least 2 days, up to 4-5, before it gets cut (butchered, not deboned). I learned this the hard way this year. My regular butcher (only guy I've ever used) retired, so I went somewhere new. The new butcher was over-run wiht deer, so he cut my deer withing 24-hours of the arrow going through it! I had skinned it on-site and delivered it to him ready to hang, but he just didn't have the room at that time. Anyhow, the flavour of the meat is great (pre-rut spikehorn whitetail) but the cuts are very messy - really thick at one end and thin at the other end. It's a much harder product to deal with for cooking that the nice even steaks from my last butcher. So that's my take on it - there are obviously different opinions about the need to hang meat, and this probably depends at least a bit on the species, age, time of the season/rut. But my point is that if you're deboning, then you can probably cut as soon as you feel that the meat is aged. If you're getting it butchered though, you may want to try to find someone who will hang it for a while.
I tend to shoot my first deer early (bow season), so it's way too hot to hang in a garage (even if I had a garage - lol). So my challenge is to find a butcher who will hang a deer for me for a while to let it "set up". I have discussed getting an old fridge that would stay unplugged all year (maybe used for treestand storage?) and building a "closet rod" into it. Then just quartering my deer and hanging the quarters (remember - I DID admit to shooting small deer!). Season starts - take my stands out - plug it in - hang my quartered deer (or whole fawn! lol!) as long as I want and then bring it to the butcher for immediate cutting.
-Dave