Architecture student wanting to use a MacBook Pro

Hi, I'm an architecture student and I want to get a something portable, which I can use for university stuff and my own personal stuff.

The kind of software I use is ArchiCad, Autocad, Rhino, Microstation, Adobe Photoshop, Indesign.. etc...

I know that it is fairly big software which uses a lot of memory. Some of the software (such as AutoCad) is in my opinion much better suited to Windows, but others for Mac. My idea was to get a Mac and split the hard drive to have half windows, half mac.

Also being a student I have limited funds.

So I guess I have 2 questions:
1. Is splitting the hardrive a good idea and will it work?
2. If I do split it how big a computer do I need to get for it still to function quickly and well?

I think 17inch screen is unnecessarily large. So i'm torn between getting a 13inch and a 15inch. Am I better off spending money on a higher spec 13 inch or a lower spec 15 inch?

Mac

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