Hi I've decided that the 2016 15" is the right model for me. Most of the time it'll be connected to an LG 5k too. The only problem now, is which model. Daily Lightroom and occasional Photoshop use with RAW files will be the most intensive work I do. Fairly basic stuff mind you. Not stitching together huge panoramas or anything on that level. No video editing at all. So with this in mind, I'm thinking of the base model with a 1TB SSD. But when it comes to graphics I'm not sure what to do. Would upgrading to the 460 be worth it, or would the standard 450 do me just fine? Thanks!