YES you will regret it, i guarantee it...if you are gigging and have to stare into your computer screen then it will turn your crowd off. If you dj at home and have to get litterally 3 feet away to see a detail then you will regret it....wait and save a find a windows alternative that is cheaper.
I had both choices and i decided to go windows for this reason, and tbh the resolution on mac's are piss poor by today's standards. Resolution will be just as important as screen size because seeing things more clearly will not make you lean into the computer as much. This was a huge issue for me which is why i went with this >>>http://www.bestbuy.com/site/Samsung+...%207&cp=1&lp=4
it has 15.6" screen and 1600x900 resolution along with an anti-glare screen which apple makes you pay like $150 more for....I was in your boat for a while though so its a tough decision.
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