Some stem/bars/chain questions
I am looking into making my Bianchi Pista a bit more comfortable for riding around town. Currently have "bullhorns" from previous owner that I realized were sawed off upside down drops when I rewrapped them. My main question is, looking at my picture, should I be trying some sort of different stem, or should I just buy the cheapest pair of riser bars that I can find and see if I like them? I will eventually invest in nice drops, but I want another option that allows a slightly more upright position. Also, I know almost nothing about the components of this bike. Are those risers under the stem, or is that all part of the headset? Sorry, I'm a bit of a newbie.
As for the chain, it says KMC K-4L but I can't find out anything about this chain on the KMC website. I believe it might be the wrong chain for the bike, since the bike makes a strange sound when in motion, but it might just need cleaning and lube.