I met a guy at a show last spring; he is showing a 22 yr old stallion at PSG/Int. 1 and doing very well. I think you need to look at the horse and get a good assessment of itstraining/working level and soundness. And hopefully the price is very reasonable. The pros are that a good schoolmaster can teach you a lot. The con is pretty simple - you do have some limit on your time to use this horse as you intend; if that is only 2-3 years, then what position will you be in?
I’m all for good older horses, I bought a 15 yr old school master; got five years of great learning/showing; then leased him out for a year and 1/2, then he ended up with cervical arthritis so I mostly retired him. But I was also in a postion to be able to keep both him and a new horse.
It never hurts to look. At that age, the horse better be perfect in terms of rideability, solid brain etc. Otherwise keep looking.
You dont say where in Florida, but I’m in Orlando area, if you want to pm me, maybe I have seen it, or know something about it.
Plan B - if you like the horse you could offer to lease it…