Best kit I can find new (old stock?): https://pcpartpicker.com/product/zsT...y-pv316g186c0k
You won't need anything as long as your kit runs on the board but 16GB should be a pretty significant improvement on the usability front. You can check the support list if you want to search up specific kits.
https://www.asrock.com/mb/Intel/Z87%...cations#Memory