My guess the Topaz 30 will come with the accessories you need. What do you want to keep? I have the Topaz 20 and it appears they are interchangeable. If you check on the Viking website you can see. Your designs will work if you have one of the Viking programs. Mine has the VP3, and I believe so does the the Topaz 30 since my book for the 20 also includes the 30.