[agd]

Minor adjustment.

When following this kind of approach I typically define the criteria before the solutions. This reduces the chance of adding bias to your criteria.

[asplake]

And a minor adjustment to your minor adjustment, a defence against those that lead with metrics (see for example Management by Objectives): explore what makes it important and meaningful before defining measures of success.

A handy mnemonic: Meaning before metric, measure before method (2MBM)