You can also use 2 circulars of the same size.
I know from experience that the problem you'll have with being a new sock knitter is that if you switch methods the instructions might be confusing. Like the pattern will talk about doing something on needle 3, but if you don't have a needle 3 you might be confused. It's not impossible, but you'll need to use markers ever 14 stitches so you can know which section is which. This helps a lot, but if you need to put markers for any part of the pattern itself use a diff color or type.