Thinking about returns. This will be a 180 gal with a 125 basement sump. About 8 ft head but probably around 12 with fittings and some horizontal. Several suggested running two pumps for redundancy. I was originally planning on an external Pan World 200PS and I'm not buying two of them. Then I saw a Jeabo 10000 DC and two of those would actually be cheaper and according to their graph do about 600-700gph each. My original thought was get the Pan World (which is supposed to be pretty bulletproof) and buy something cheaper for a spare such as a submersible and have fittings set up for a quick change if needed. Thoughts?