Hey All! I am in the market for a 2017 iMac 27" and am looking for options on what I should select for specifications. I also know from reading here and elsewhere that the memory (RAM) is user upgradable and will be buying it from the Apple store with the base 8GB. Looking for options on where I should purchase the additional RAM from as well as how much. How I will use the iMac: -Heavy photo editing of large RAW files in Adobe Lightroom and Photoshop. -Editing of video in Adobe Premiere Pro on occasion with some 4K video mixed in with 1080. -Rest of the use will be general email and web use. -I'd possibly be looking to hook up at least 1 maybe 2 external monitors in the near future. I look forward to your options, thanks!