Pool pumps, or pumps in general, can't pull or push an unlimited amount of water.
The Hayward Super Pump 1HP can prime itself from 8' above water or push water 65' up. On low speed the pump could push approximately 15-20 feet in the air.
In the middle of this page : http://haywardcanada.com/products/pid_10.html , it says, "Self-priming (suction lift up to 8’ above water level)"
And on the same page it says that the pump has 0 GPM flow above 65ft of head.
You will be able to run your sand filter, but probably won't be able to backwash properly.
You'll probably get approximately 30 GPM on Low speed, which will turn over 43,200 gallons of water per day.

Brad
www.waterworkspools.com