Hello! I'm going to university next year and am debating between a 2017 13 inch nTB MBP with 16gb RAM and 512gb SSD, and the base model 2015 15 inch MBP (no dedicated GPU). I'm mainly going to be using this computer for Android Dev, AutoCAD, and Matlab. One concern I have with the 2015 model is how future proof it is going to be. Do you guys think these computer can last for another 5 years? Also, how is the portability with the 2015 15 inch? Is it portable enough to carry to class every day with a bag full of binders and textbooks? Which model should I go with and why?