I'd check for any outstanding TSB's that still need complied with and get them done. For example the sulphur smell/bad cats one, the drivers seat rattle/looseness one and so forth. Won't hurt to look into those.
If you are at all interested in getting an extended warranty, the 100k top of the line ones can be had for ~$900.00. But that is up to you. If everything is in good working order, don't worry about it.