N1YDP22, none of us assume that you're new to shooting. It's just that we get lots of experienced shooters who are surprised by how much they learn at an Appleseed. And many are surprised to learn that they have some "bad habits" to break before earning their Rifleman's patch. Either way, you're right, Appleseed is a lot of fun!
While we encourage people to consider an LTR (Liberty Training Rifle), feel free to "shoot what ya brung". We encourage the use of aperture sights, but your scope will be fine. You will want a USGI-type sling for each rifle, and a minimum of two 10-round magazines for the 64. The rest of the equipment needed is outlined in the two links I gave you earlier. Feel free to ask more questions, we're all volunteers and we're here to help!