Brian,
Yet again sticking my oar in but what the hell.
As we don't have buddy passes I can only guess as to the order you sit in the standby list but I'd guess that its about an inch from the bottom, just above us other airlines staff but below all the serving and retired staff. In these cases you need to ask yourself a few questions about what if you don't get on:
Is your stay flexible and do you live close to CVG so that if you don't get on for a few days is it really an inconvenience and if so how much of one. Is accomodation already paid for?
Can you use your passes an a different route? If so then there are probably a lot more flights from JFK to Europe than from CVG ( AMS, BRU, FRA etc ). You could try the two flights to CDG and if no luck then alternate to one of the others. Once in Europe you are a lot closer to Paris than you are in the US. Most european capitals have good train and/or coach connections between them and the additioanl fare is probably cheaper than a night spent at the JFK airport hotel.
Most of the JFK- Europe flights look OK for availability but I guess only Flower knows the real figures...