Based on the comments above, I went back and chose LGA-FCO instead of London (Mrs CC wanted Italy anyway) - turns out the fare was cheaper than LHR.
Booked 2 at $1143.61 each in October
Happily cancelled the LHR ones once ticketed via Expedia....
AC shows Business class (upgraded) but system times out when you try to select seats (least of my concerns right now).
CC