Hi guys - first post, so be nice please

After much soul-searching and looking into my career, I've decided I do wish to get an MBA. However, I'm giving myself 2 years from now - that is, applying around Oct-Dec 2014 to enter in 2015. Aim is of course to get into one of H/W/S. In fact my order of preference would probably be H/S/Booth (love Chicago, bro went to Booth).
My question to you guys is - what can I do from this point on, to build as strong an application as possible? I'll provide some details and it would be incredibly helpful if you could help point out where I'm not so strong/lack, or where I'm good and should push further, etc:
1) Summa Cum Laude from a non target business university during ugrad - graduated Dec 2009.
2) Working in a Tier 2 management consulting firm (one of OW, Monitor, Roland Berger, LEK, AT K) and have moved up the ranks reasonably well (should hopefully get a good recommendation from my favourite Partner)
3) ECAs - strong leadership shown during college/high school (started/ran 2 prominent clubs), but not a lot since then obviously as focus was more on work
4) Pretty good writer - can I exploit this somehow and maybe write a novella? Or maybe try and get a contributing role in a leading newspaper in Singapore (where I'm based)?
5) Haven't taken the GMAT yet. I definitely know I need to ace it like no other (750+ will have to be achieved I think)
Thoughts, people? Basically looking for stories around
'if I had 2 extra years, this is what I'd have done...'Would really appreciate the input!