You can only get there by flyin'(using SA breaker limit to fly highter) or by teleport!
IF you use San andreas Teleporter software, go to these coords:
x: 644.7448
Y: -2313.5852
Z: 703
But if you don't wanna have work, just put the cleo i have made in your cleo folder and press:
Right Mouse Button + K , teleporting you automatically to Kami Lookout.