Is my donor area overharvested? Is there hope? (Photos)

I cannot clearly tell from your pictures the extent of the FUE extraction area but if it approximates the shaved area it is not appropriate. It is impossible to get 5,000 FUE grafts from the safe donor area. You can get 5,000 grafts but a great number of them may be programmed to be lost from male pattern balding. 

You may very well be right: that's a lot of harvesting, and over harvesting seems to be more and more common. But I t's impossible (for me, anyway) to assess what your donor area looks like from the photos, since RealSelf does not provide a means for enlarging them. The only thing I can say is, time will tell. Also, I hope you don't go on to have any significant hair loss from your scalp, because there will be a limited number of donor follicles with which to replace it. Thanks for your question, and best of luck to you.