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As a recent engineering grad, I'll tell you the MBA will work just fine.

If you need to do any heavy lifting (hardware intensive stuff), you will be using lab computers. The lab computers will also have bigger screens than either laptop you're considering, making the process less painful.

Go with the form factor you like best.
 
As a student who has to carry around his laptop all the time I have to say: Having a 2,5kg laptop around your shoulder all the time is annoying.
 
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