I'm getting a macbook for school work and for music production and performance. Would one with 512gb of PCIe storage and an i7 core be a sufficient? The iMac I'm using right now for music has a 1TB HDD and an i5. I only use 250GB because I use bootcamp. I don't know much about PCIe so should I spend extra money getting 512GB PCIe storage or just stick with 256GB.