Just for fun: E-M5 + 45mm + E-P2
I don't know much about the mFT 9-18mm, but if its's anything like my FT version, it's my favorite lens. I shoot a lot of landscapes and it is simply wonderful for this, also works just fine on my E-PM1 with adapter.
I'm leaning towards buying more mFT lenses to take advantage of the small overall kit size. Were it not for the Olympus rebate, my first would be the Pan 20mm, or possibly their 25mm (tough to justify both), then the Pan 14mm. Not sure how much I'll actually use the 45mm, but its gotten such fabulous reviews that at $250 (with rebate) its tough to say no to.