DC5 has a single stage airbag. I got this wheel for my car and installation was a snap. There is a full install writeup on this site or preludepower. Make sure you disconnect your battery and wait 15 minutes before disconnecting the airbag in your stock wheel.
You can adapt your existing cruise buttons to work with the DC5. It's just a matter of mounting them. Once you have both wheels side-by-side you will figure it out