I’d connect it to my current track and spray paint it black, I did that with some out of scale track that I was given in HO, I put it in sections at the distant areas and the back or in tunnels and cuttings out of sight and unless someone was being a serious rivet counter most visitors failed to notice it.
My advice is use it and don’t worry about scale.
If it is “galvanized” it may be coated over some alloy hopefully not magnetic as rust is now a huge issue unless you are using battery power.