I would say 8 Wolves, 4-5 Nightingales, and the rest Hogs would be able to tango with that. Semi off topic?
Try to keep your Hogs in front of your wolves. Have them act as a meat shield, for lack of a better term. To attack your AA, the Hornets will have to fly past the Hogs, buying your AA more time. Remember, Wolves are faster than Hornets, so you can kite them very easily.
Core infantry (Marines) are very good at fighting core air, but at that point in the game, it's usually better to just stick to Vehicles, as they are much faster than infantry.
I recently played a match where 2 guys went Air and Condor and I only build about 6-8 Ravers to be on the field at a time and it worked just fine. Ill admit me going Voltiale Scarab probably made it way stronger for Reavers since any air unit shot by it couldn't get away..But I never knew Condor Strike was so good at sniping AA..
That's thing thing about AA, you never build just AA. You need something else to back it up; Hogs and 'Rauders are usually the best option because you'll already have the appointment buildings and upgrades. In your case, you used a Scarab, but the same principle applies.
If one is able to properly take advantage of a Condor's range, they're surprisingly strong. Hovering them over obstacles and staying in the the FOG can usually let the Condor beat AA, but it's very tricky to do. And as you said, the Y ability is solid.
I feel going for a Condor is better than going for mass air, el-oh-el.