OG, Looks like you are well into the planning stage. My only suggestion would be to obtain and install (even temporally) a MPGuino ASAP. Not only will it confirm the worth of any aero or mechanical changes, but also give you instant feedback as you change your driving style to a Hypermiler.
Also I have found that a vacumn gauge is very important to us "lean burn guys" as it will warn you as you are about to "go out" of lean burn so you can decide if you want to make a quick adjustment to throttle position.
Here is a possible "GREEN" accent you may want to add to your valve cover. This one will be added to our 95 white VX "show car".
