High speed pool pumps (3600rpm) are self priming. The Wave I are designed for low amp so are at (1725rpm) which is not self priming. As I suggested to masterb on his build with a Reeflo and Ultima, the initial priming can be done by shop vac-ing the filter backwash outlet to start the syphon into the pump and filter. Or as you suggested, install tee fittings.
Thanks Ken. Nice trick of the trade with the shop vac.