I shot my best (so far) buck that had a tag in his ear on a 14,000 acre ranch. Texas A&M was doing a study on them in years past and had installed the ear tag. That sucker was as wild as a March hare! There wasn't nothing tame about him. I was proud to get him. I'd do what you feel is right, but I wouldn't have a prollem taking one under those conditions. A feller'd be hunting or looking for that particular one deer, so it's still hunting - not like shooting fish in a barrel.
A lot of posted previous suggestions are very good, but the bottom line is that it's up to you. Not many folks would have a prollem hunting him (them), or I like the donated thingy, or taking one yourself for the memory and reflection of how you built your empire.
Good luck on your choice! You gotta do what you think's right for your situation. You won't have a problem finding takers however you go.