Hi, I need some real quick advice on the iMac 2017 5K before I buy it tonight. There’s a chance my budget can stretch to the next model up + my custom 512GB SSD. In the education store it’s £180 more, and you’re getting the i5 7600 over the 7500, and the Radeon 575 over the 570. Is this worth it, or should I spend the money on getting an upgrade from 8GB to 24GB RAM via a third party kit sooner rather than later down the line? I’m talking objectively here - would I regret not having the upgraded processor and graphics card or are they really superficial upgrades? Is it an outstanding value upgrade or just meh? Many thanks.