This 120-acre Colorado property comes with an indoor riding arena, 24-stall barn, and its own private hangar and air strip. When Sue and Dennis Pratt bought their 119.51 acres of Northwestern Colorado land back in 1999, it was out of a passion for horses.Together, they built the current facilities at Western Dreams Ranch from the ground up — the main residence, caretaker’s apartment, indoor riding arena with 24-stall barn, heated shop, high-producing well, airplane hangar, and 2,400-foot…