I currently have a 2016 12" M5/512GB MacBook. I got an incredible deal on it and it's currently my only personal home computer (I only use it for personal and casual use). However, I'm debating on using it for both personal AND professional purposes, and if I do this, I'll really need it to be a able to handle whatever I might throw at it. This being said, should I update to an M7 version for an additional $300 to $400 (diff between what I could get for mine and BHphoto's M7/512 price) to ensure that it's capable of handling whatever I might need to use it for (Nothing too crazy...) and to have it last me a few more years in terms of future proofing it?