you can easily upgrade from what youre using for $400. improvements will be vast, also.
check this out....
ryzen 5 - 150$
mobo - 100$
2x8 GB RAM @2400 or faster - 150$
thats only $350. also get a cheap SSD and youll be lightning compared to that old 4th gen. keep the 980gtx, im sure its held up. later, you can upgrade your R5 to an R7 if you feel the need. put that 128 GB SSD in there with OS and just one or two games you play a lot of and get another SSD/HDD with 256 or 512 (they are super cheap right now) for rest of docs, files, apps, other games.
youll be so much faster and better off.