Go back to the seller and tell him you are interested in the accessories if he ever comes across them. A lot of times they will come across the stuff later but they won't remember who they sold the machine to so if you keep in contact, you may be able to get what is missing later.
I'm not familiar with this machine but looked it up and it looks like a great machine with lots of perks. Vikings have a really good reputation. Be sure to post a picture of your first project on it!