Should I upgrade the hard drive to a 256GB Samsung SSD and install 8GB RAM or sell it and buy a 2011/2012 model 15' MBP? Specs are 2.66ghz i7 with turbo boost up to 3.3ghz, 4GB RAM, 500GB HDD, mid 2010. I primarily use for web browsing and blackboard at school, but I would like to do 3D models/assemblies on AutoCAD, Inventor, and Solidworks on here. I also use Photoshop and plan on learning Xcode in the future. Can it handle all that or should I upgrade to the quad core i7?