Pump ordered - it should be here Saturday. Depending on when it comes I'll spend Saturday and/or most of Sunday draining and refilling, then check the levels again and get it prepared to SLAM (probably the first weekend of May, so I'm not at work all day during the initial phases at least.) Since I shouldn't run my pool pump while draining and refilling, do I just figure out the refill time, do that, take all the sub pump stuff out, run the main pool pump for half an hour or so, and then test to see where I got to? I'm guessing that testing while refilling won't be accurate?
Also, thanks very much for all your help. Even though the pool's still green, all the good advice has been well worth the cost of a donation.