I'm going to re-plumb my house. It's a 3 bed, 2 bath house. All the plumbing is on the main level, and the basement is partially finished. I'm renovating down in the basement and decided while I was doing drywall work, I might as well cut in to the ceiling and replace the polybutylene pipes with PEX. I got 2 quotes from plumbers and decided I'd be better off to do it myself. I'm very handy and work at a building supply store so I can get a great price on materials. I'm also planning on adding a second shower head in the Master bath when I renovate the bathroom next year.
I was wanting to look at adding in a recirc pump for the hot water. Since I am in the space between the floors, I would do a dedicated hot water return. The hot water heater is in the basement. Let's say the 2 shower heads are approx 10 ft above the tank (if that matters). I'm on a well with a pressure tank and a 40/60 pressure switch.
My questions are this: With my current layout, should I plumb the return line as 2 different zones? What parts am I going to need to do this right (including pump size recommendations).