"Bred for western pleasure 1/4 mike racing reining showing cutting ranch prospect"
Here's the problem - these are all VERY DIFFERENT disciplines. To be successful, you have to stick to like disciplines. Pleasure takes low, slow and steady, and to be top level, they need deep hocks, cadenced jog, lift in the shoulder and physically be a pretty, taller horse - 14.3 just is too small for a pleasure stud.
For high level cutters, quick, agile, catty. Same for reiners - low hocks, muscular rear ends, pretty headed with lots of flash. Your guy is the right height, but that's about all I can tell so far from pictures...
Ranch prospect would be my opinion of his best fit - but not as a stud. The horse market is flooded with really nice studs with excellent, focused on discipline breeding - your "jack of all trades" guy is cute, and will make a really cute gelding for you to enjoy - but not enough to offer the next generation to force him to live a stud's life.