Hi there, something to be aware of re-Kristian Gabriel reply to your 3rd point. Your timeline should be whatever your most likely final output is going to be (delivery master file). i.e if you intend your master output to be 1080p25fps, thats what you should work in as your master sequence. If its a 4k variant then make it 4k. Lets say you decide to work in 1080p and then should you decide to do as Kristian suggested: to make new master files in 1080p. This leads to my points. 1.You will loose the flexibility that 4k media gives you in post. 4k has 4 times the pixels of 1080p, that means you can crop in on a 4k frame in a 1080p timeline up to 4x before you start to stretch the pixels. With most of your media being 4k, thats a lot of potential cropping to waste. 2.with the addition of new master files, you'll have the 4k master files, new master files, and proxies to contend with, thats lot of extra time and space added to the project to loose 4k. I agree with Jim and Kristian on the other 2 points.
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