That would be a hard transition... I wouldn't go that route unless you want 100% mobile and way fewer OS features. The new 12" retina MacBook is sick though. If I didn't need Windows for the dna200 I would have bought it instead of my dell xps13. I hate windows but it's a necessary evil for now. If the retina book had a cellular card I would have done it anyway. I hear you can ghost Windows on to a Mac. Sounds like a pain but well worth it. Still waiting for an OS X device with a cell card built in. Someday.
When the time comes, I plan to get the mac mini so I can always have full 'puter power if needed. I don't do much power usage anyway.
Need Windows for DNA200?!?!?! Ah man, that might be a deal breaker dude! I can't stand Windows either. Forced to use it at work, and that's too much for me!!
You can get Parallels for Mac. Lets you run multiple desktops with multiple OpSys's. Apple's Boot Camp lets you do it, but on a separate partition of the hard drive. I looked into this a little when my youngest went to college, as she has a MB Air too, and the school is Windows based. But, so far, she hasn't needed Windows.
This article helped me decipher options.
The best way to run Windows on your Mac
By the way, I have some fresh LG HG2's coming for my CAM-M!
Also, have you ever done or looked at doing the Royal Hunter? Not for a run, as a send-in?