Lightroom on 2016 NTB macbook pro

A 2 GHz i5 processor might slow you down a bit, but it should handle Lightroom just fine. A solid-state drive will help in the loading of the Lightroom program, but it won't  enhance your postprocessing speed in Lightroom after the program is loaded. I use Lightroom on a Windows 10 computer with an i5 processor running at 3.1 GHz. I  have 8  GB RAM and Lightroom is installed on a SSD. My images are stored on 7200 RPM "regular" hard drives. Generally speaking, my computer handles Lightroom well. It slows down a bit if I'm stitching panoramas with 18 images. But it does get the job done.

Any modern computer will run both LR and PS.

I use a desktop I built in March of 2011 and a Dell Notebook I bought in December 2011. Both run LR and PS without problems.

Just get the most RAM offered and the biggest SSD offered. If you can afford it.