Big Dave,

Here is what I came up with:

Set the interface back to the Hayward option
Set Timer 1 to run from 12:00 AM to 11:45 PM (this way you can manually override at any time)
Set speed for Timer 1 to 1,750 RPM (speed 2 - you can choose whatever speed you like)
I set speed 4's time to 8 hours (so I can use it for the spa)

This way, the pump's internal clock will allow it to come on whenever the timer gives it voltage at speed 2, but I can manually override the speed by pressing the speed button that I want.