Hello. I have gone through the donors and found my top 5. One I like the most donated in 2012. I am worried that the sperm being so old might make it less potent. I am also wondering if/when you retire vials. For instance, I am saving to purchase the 4 vial family today deal and planning to start in 2019. Will the 2012 donor be retired by then? This is donor 13465. Thanks so much!