The details: I split my work (web development, UX, photo editing) time between in our office and at my home office. I have been using a 27" 2013 iMac + Apple Thunderbolt Display for my office setup, and using my 2013 rMBP + a Dell 24" 4K monitor (Dell Ultra HD 4K Monitor P2415Q 24-Inch) at my home office. I have gotten sick of juggling two different systems for my work, so will be selling my iMac and using my rMBP strictly, which I plan on upgrading to a new maxed out MBP in a year or two after this won't hack it anymore. I have also gotten sick of the 24" Dell monitor when compared to a larger 27" monitor. It seems tiny in comparison. I am planning on selling my iMac and bringing my 24" 4K monitor to my office, and using the 24" 4K and the 27" ATD with my rMBP in clamshell mode. Will my rMBP be able to hack that? It runs fine powering it's own screen and a 24" 4K screen, so in theory it should be fine, right? I am also planning on using those funds to pay for a new, larger 4K or 5K monitor to use in my home office run off my rMBP. What is the current best bet for a 4K 27" or 32", or a 5K 27" or 32" monitor? I am hoping to spend under $700. And will my 2013 rMBP (maxed out, 2GB gfx card) be adequate to power a 5K display? Thanks for any advice, guys.