I honestly would wait and see what apple offers with the new MacBook Air coming this year or try to find a used retina 13" from 2015. That's a rock solid notebook for the price. I wouldn't recommend buying a non-retina 101/102, MD102 in your case, MacBook Pro in 2018. While they're still useful for basic tasks, they will soon become obsolete. While the CPU is still useful and an SSD improves performance, the integrated Ivy Bridge GPU Intel 4000 is really underpowered and outdated. We're currently on the 7th and 8th generation of Intel's core CPUs. The Iris 6100 in the early-2015 13" MBP is night and day compared to the Intel 4000 and even the Intel 5000 and 6000 of the last 2 MacBook Air versions (2015 and 2017) is more powerful. It's up to you but I would keep looking. You're bound to find a great deal on a better machine.
Also the Retina display makes a huge difference in screen quality and color. I wouldn't use a 1200x800 resolution that is really mid to late 2000s tech. We're less than 2 years away from 2020!