It can be a big exercise, I had been helping clients in these 20 years. Complicate if we are looking at holistic performance measurement system for critical analysis to match against:
1. business values/ investment returns/ wealth - corporate level
2. budget/ goals/ commitments - business level
3. activities/ productivities/ effectiveness - operational level
... more details
so, I normally recommend people to set KPIs and place them is a business dashboard (with graphs, charts, KPIs) and breakdown for more fine indicators for operational management.

1. To start off, use what you already have so that business can move on.
2. KPIs design first (balance scorecard may apply in some organisation, but few more categories like market condition and technology impact should include for your kind of business).
3. all important indicators associated with each KPI to be arranged and formulated so that the analysis will be more meaningful.
4. check on feasibility in producing these data (as automated as possible)
5. Design the business dashboard + plan IT initiatives for information production.
6. It's all yours now ...

hope this help