I bought a 2016 Sport 6MT in July in San Francisco for 29,500. Thats 2016.!!
The fabric seats are great, and it does have Limited Slip Diff, better Brakes, SRM and BOSE as do all Sport models.
If you like the integrated NAV and heated leather seats consider a new touring, but contrary to other owners I LOVE the BOSE system in my Sport model and am very happy with that choice. The phone integration and the sound quality are excellent.
If leather or heated seats are an issue they can be added easily at a later time.
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Buying new gives you better financing as well as knowledge that you are starting with a fresh model with brand new warranty. I don't think your price on the CPO car is very compelling.
Assume this late in the year you should only be looking at a 2016 model year (new) at that price. I would pass on a 2015 at this point.