You have a 5 mile commute, which, here in the CF, officially is classified as a wussy commute.

This being the case, you should ride in the most inefficient gear, adjust your brakes for a slight drag and wear a pink kit with "commuter wussy" emblazoned across the back.

regards,

bitter, jealous, fat old guy with a somewhat hilly 12 mile commute at either end of a 12 hour work day!