If you just picked up a "junker", in what order would you begin to get the engine running back in prime condition?

Here's my starter list:
1. New fuel filters
2. Purge
Valves
Adjust throttle linkages
Banjo bolts
Italian Tune Up
Rack bolt
Alda


What else, or what do you think I have out of order of priority? Please keep this engine related ONLY!

__________________
Paul
2004 E500 4matic; 72,000mi