54cm is a great frame size... many potential buyers looking for that size frame... if they know it or not...
Pull off the extras and the pedals and list for $300 of $325. Do you have a set of cheap pedals to replace them with? If you have the cleats definatly keep the pedals for your next ride.
Again... location is key... I live in a good bike market and I think I could sell your bike in my area for $300