[MetroMPG]

Post a couple of fillers to get yourself to 5. We won't mind.

For first mods, I'd look into a powerful block/coolant heater and then partial grille blocking (both for aero & temp effects).

... since you already went and bought instrumentation, which would have been my previous first mod suggestion.

And... welcome to the forum!

PS - you're likely going to get some people here challenging the supposed efficiency benefits of some of your current mods with solid theory. Just a heads up.