Used my pump and plate chiller last night. Had the kettle on the burner, above the level of the pump. Primed the pump, had the chiller in line, recirculated boiling wort through the plate chiller to sanitize a few minutes before flame-out (no need for StarSan that way). The plate chiller is at the same level as the pump, with a short length of silicone tubing connecting it (all QD's)...
This was the second time I've gone this route, and it worked even better than the first time. I also found that I can get the wort flowing into primary and turn off the pump. The flow was sufficient to keep everything going. I would use the pump from time to time, since I had to really slow down the wort out flow (ground water was annoyingly warm last night).
Next time, unless the ground water has cooled down enough, I'll probably run the chill water through the plate chiller after flame-out but recirculate back into the kettle until it's at a lower temperature. Then I'll run it into primary, chilling the rest of the way. IMO, that's where having a good pump really comes into it's own.