Thanks everyone.

More questions:

Regarding the salt system referenced above, two different pool company owners have told me they are no longer recommending salt because the long term effects are showing rust and corrosion. I was sold on the idea until I talked to them, and I think I am now going to skip that. Any thoughts?

Will I regret only putting 4 feet of concrete on the sides of the pool? Again, I have lots planned for each end.