I would honestly just buy a used Oct 2013 15" MBP instead. A used one should run you under $1000 now that the new MBPs are coming out.
I currently have one that I bought in 2014, and I can drive a 4k display (Dell P2715Q) with a large storyboard file open in xcode, along with the laptop display itself at the highest scaled resolution. I think this is a pretty good benchmark for whether or not a system is good enough.
I currently have one that I bought in 2014, and I can drive a 4k display (Dell P2715Q) with a large storyboard file open in xcode, along with the laptop display itself at the highest scaled resolution. I think this is a pretty good benchmark for whether or not a system is good enough.