Getting Fixed

I have recently have been given an opportunity to get a horse that is a 14-year-old Quarter horse stallion. I am planning on gelding him immediately if I decide to take him, and hopefully he will mellow out fairly quickly. He is a great horse and has been used extensively for cattle work and some trail riding and not been allowed to be “studdy”. In fact, if he was a gelding he would have been in my pasture yesterday! He has been socialized with other horses in his younger years but has been by himself for the last four or five and has not had a real breeding career. I don’t have any experience handling a stud, and am not looking to start. If he will remain acting like he is a stallion but more mellow, I’m not thinking that is something I would like to take on. I do have a gelding already so he would have a buddy. I want to be able to relax and enjoy my ride, not be on the lookout for fellow mares. Does anyone have an input on gelding an older stallion? How did it work out?