You will love your new machine - at least I love mine! It brought back a love of sewing (and sparked an interest in vintage machines which led to buying a couple more......)
Although I would prefer the metal bobbins, when I bought a package I found they were not all the same size - some would fit on the spindle to wind, others wouldn't. So I went to the plastic ones and they are all identical. I think they are the class 66 bobbins - you can check over on Sew Classic to be sure. They are readily available.
The 185 is just a super little machine!