I have a 3-year-old reg. 1/2-Dartmoor out of a 17HH Hanovarian/Thoroughbred mare who needs mileage. He's about 14.3 HH now.
He can live at my farm or yours, if you are nearby. He will make an awesome jumper, but right now he's just doing walk/trot on trails and in the ring. He's still growing so we are going slow here. He has no vices and loves people. If you ride at my barn (family home), the fee would be a small boarding fee.. We have miles of trails and a lighted riding ring. If you keep him elsewhere, I would have to approve it but there would be no monthly fee.
I also have a 14.2 HH sorrel 18-yr-old half-Arabian mare that's a great trail horse that I would lease on-site. She'd make a great horse for a beginner or older person who wants to feel safe.