I'm making a double batch of the After Dinner Mint Triangles. I am just a 2 oz short of the Almond Bark. I do however, have a bag of Wilton's White Candy Melts that a friend gave me and I don't know how old it is. Do you think it's okay to combine the 2 types? Do you think there's an expiration factor that I should double check on? I didn't see a date on the packaging.