Thanks everyone for the great info and suggestions - Globaliser correctly noted my flight number typo - it is flight 179! (Updated the original post to reflect this.)

I'm on the fence right now about taking 64B and 63J and hoping 64A becomes available at OLCI and taking 14JK. It seems like 64B and 63J are close enough to allow for an occasional chat while inflight without being disruptive to others around us. Anyone with experience want to make a recommendation?