Are you a Good Sam member? If so, this is one time Camping World can help you out:
Your local CW will probably have a higher price but just bring the online price in with you (I have it queued up on my phone) and they should honor it. Then you can put cyclone vents on both vents; that's what I just did on my ACE. Also don't forget to pick up a tube of self-leveling sealant.