Your first step I would think would be to contact your school and see if the engineering software you will need is even available on a mac.
the p150 has a slightly better processor and gpu but only 128gb of HDD space whereas the MBP has 256GB...
Honestly I would go with the Clevo (I love mine) and drop down to the 670m GPU since there isnt much that it cant play that the 675 can and put that $100 toward a bigger ssd or secondary storage.
The best bang for mobile gpu is probably the 7970m. There isnt much it cant run at ultra at all. Sadly its about a $200 upgrade.