Halls,
how about trying the SinuNeb system (nebulizer for delivering antibiotics to the sinuses)? It is more effective than oral antibiotics.
Another option is IV antibiotics -this, too is more effective.
Ceftin should be fine. But I would stay away fom floroquinolones (Avelox, Levaquin, Cipro). i still haev nerve damage in my elbows and feet from that crap.