Tank to Sump Plumbing, Return pump, Flow rate

[Lance]

Oh, I forgot to address your question regarding plugging the drain line and adding a sump later. IMO get your sump plumbed and everything finished before you start the tank up. With my first tank I added the sump months after the DT was running and believe me it is much easier to do the complete job from the beginning.
Oh and welcome back young feller!