Poolsean, in your suggestion about filling the deep well(Sorry I'm such a dummy-don't know how to insert quote here ),are you thinking we would use a poured material like a cement product? I was thinking of something like a bed of gravel. This is precisely why I'm asking for advice.

The new 3' spot would still be the deep end and thus would have to be slightly lower to facilitate drainage. The hydrostatic valve will be brought up to the floor level, as will the main drain. The main drain will be "Teed" off to give us two main drains and bring us into code compliance.
Hal