2011 M6 i Touring Questions

Hello all, I was going to purchase a new 14 M6 iTouring but after some number crunching I found out a 11 would fit my budget a lot more. The dealer sticker price is 16995$. If i dont get it for 15.5k then I'll be walking out the door. Below are my questions, and I thank you all in advance for helping me out!
1. I'm planning on doing a couple mods on it, thinking of blacking out the front/back emblems, plasti-dipping the stock 17" wheels, tinting the glass, adding HID head-lights/fog-lamps, replacing the front/back plates, and possibly replacing the intake and exhaust(I'm a noob so I'll leave these alone until summer). Also the color of the M6 is ebony black(I like). Let me know if you have done any of these and post pictures on how it looks!
2. Miles are 24k, how does your M6 drive at this range, any big mechanical fix, or anything i should look into before buying?
3. The trunk. I've seen videos where it looks big, but will it fit a big 3 wheel jogging stroller? (3 week old baby on board). Thanks!
4. FWD. How well does this car ride in snow? It'll be snowing soon here in Alaska, and I'm wondering how well its run through. I'm planning on buying some winter tires with studs and an auto start. Also it will be parked inside a heated garage.
If you have any other input/suggestions, please don't hesitate to list them.
 
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