Full regression testing will take a long time. Try and separate it to run in parallel on the 8/10 boxes.

[jrbeaumont]

Build a script or program to be run from ideally anywhere, but any machine with access to all 8 or 10 boxes.
The script should split the tests into a sensible number of groups (possibly randomly) and then send the list to the boxes, each running fewer tests overall, but in parallel, so we get all results in a shorter length of time.