Wanted 14.2-15-2 safe dressage horse

No upper age bracket within reason but nothing young and green, . I’m an older rider who wants to progress up to elementary/medium in dressage, I therefore need an experienced safe horse/pony to help me achieve this, must also be safe to hack out on its own and good in traffic and farm machinery. Gelding preferred but would consider a mare. Good budget and 5* private yard with horsey company awaits .