I would start out with approximately 5 studs.
All Confirmationally sound and:
One for sure footedness/good feet - depended on the horse
One for smooth gaits - either a TWH, RMH, or a Saddlebred
One for stamina - either an Arab or a Saddlebred
Two for trainability - probably one draft and one quarterhorse
The mare ratio would be one stallion for every 50 mares. 255 horses total to start.
I would not breed in anticipation of there being a need for my horses; I would request that the BP send their requests/needs for horses. That way, I can cross breeds only when necessary or requested.
All horses would be started under saddle for 90 days, then an additional 30 days of trail riding for a total of 120 days.
For the horses that were refused, crossbreds would go to work as ranch horses or endurance horses (or what suits them); registered horses would begin training for the discipline that best suits them.
Does that answer your questions?