Your Gator, if it is a heavy one, with the addition of an all-terrain dump trailer, should take care of a lot of your barn, farm animal, snow and garden tasks, mitigating your perceived need for two tractors. I have a friend in Iowa who moves a lot of snow with his heavy Gator and a front snow plow.
LINK:
MUTS - Multi-Use Trailer System for your ATV, Quad and 4 Wheeler
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Others here are more qualified to comment on converting hydraulic powered skid steer implements to tractor use. However, the best plan may be to sell these off and buy tractor implements. Alternately, I believe a hybrid Bob Cat "Tool Cat" could use the hydraulic powered implements but still work at many "tractor" chores and provide plenty of front lift for heavy hay bales. However, a Tool Cat is twice the money to what you are considering.
LINK:
Tootcat site:tractorbynet.com - Google Search
Skid Steers are designed to PUSH. Implements are front mounted. Skid Steers do not have mechanical PTO connections, they use relatively inefficient, quite expensive, hydraulic powered implements. Usually minimal ground clearance.
Tractors are designed to PULL, hence characteristic, outsize, rear wheels. Ground contact implements are mounted on the rear Three Point Hitch, which has an efficient mechanical PTO connection at its center. Implements are relatively cheap. Tractors have 12" to 14" ground clearance.
Tractor Front End Loaders are designed to LIFT. When operators apply Skid Steer PUSHING loads to FEL arms, failure occurs.