My understanding is that the minimum fare requirement for the SWUs is only effective on BusinessFirst itineraries. For regular domestic travel (like your proposed itinerary) there should be no minimum fare requirements.
http://www.continental.com/web/en-US...wupgrades.aspx
Originally Posted by co.com
System-wide Upgrades issued after Jan. 1, 2011 are eligible for all fares except S, T, K, L, G and N in BusinessFirst markets.
The CR1s should also work, and I'd redeem those if you have them for that itinerary, but either should work on a domestic trip.