I assume the technician used the brake tester on an MoT set-up. If so, he should have told you if the pedal was soft or needed setting up and as he didn't!!! I assume that is not the issue, therefore further bleeding is not required.
This leaves the front brakes.
The front brakes are also "heavy duty" in that they are large and the vehicle is slow. There is plenty of reserve power, so much in fact that the brakes run relatively cool. If the new pads require more than normal heat to begin to work properly (F1 car brakes approach 1000deg C before they start to work, hence the ceramic discs )then this could be a problem. In my opinion, anything other than std pads and discs is a waste of money.
Lastly, what condition where the discs in? The greater the wear, the longer it will take to bed them in. The above efficiency rating on the dyno proved that they work ok at 5mph but what pedal pressure was required to do it?
Roger