So, I’m flying pretty quickly through Wheelock’s with my trusty 501 Latin Verbs and Cassell’s dictionary. Is there anything else I might need for when I’m done (or now, for that matter)? I’m planning on starting Pharr’s Vergil.
You don’t really need anything else except for maybe a grammar book, but you can use the ones on Textkit for that. Vergil is a pretty rough plunge from Wheelock’s, but if you retain what you have learned and have a strong interest in the reading material then you should enjoy reading Vergil. I assume this book has cliffnotes, those make things a lot easier, and not just by explaining the grammar of a passage. You might want to try your hand at some of the Loci Immutati at the back of the book or even some random pieces from Textkit or the internet.