Priming the pump like that is a pointless thing to do. The oil will drain straight out of the bottom of the pump, but you'll think it's primed because the internetz said it was.
Instead, get the pump bolted up, replace the sump and fill it, then remove the dizzi and use a drill on the top end of the pump drive to actually prime the pump and the rest of the oil system.
This way you'll actually be able to see the pressure light go off and the system will actually be primed.