New best friend/needle in a haystack

Looking for a 16.1 - 17hh wonder horse having lost my boy after 18+ awesome years. Prefer a gelding but would consider a mare, age 8 plus but again not a given. They must be good to hack on their own as in leaving the yard - no nappers. A horse that is happy to be hacked (involving plenty of trotting and cantering) once/twice a week and maybe the odd flat lesson when time/weather/ground permits. Used to warmbloods but again not a given. A horse that does not need to be ridden every day - plenty of turnout. Horse will need to be stabled overnight November to March, with turnout during the day. Ideally no vices. Ailments, injuries, sarcoids etc that are managable are okay.