Tons of people have machines that work just fine with no problems! But, that Lenovo will be hell for you. Just return the mac, and build one twice as fast. It won't be dead-easy, but lots of Gigabyte boards are pretty easy.
Watch this mini-series for some motivation.
http://www.youtube.com/watch?v=iwaW6HR9dw4 It's very well made, and he shows you what he does and what to expect. I wouldn't go for that cpu or socket, obviously. But there are LOTS of people on here running hackintoshes in professional-level studios. Here's a great example:
http://www.tonymacx86.com/golden-bu...core-i7-3770k-ga-z77x-up5-th-32gb-hd4000.html
Just find what parts you want, look at the "Golden Builds" section on here, and you will see instructions on what to do for your set of parts. You might have to adjust things here and there, but if you think you can handle it, that mac you own now will become a pro-level recording machine!