I live in Tasmania and ocean swells can reach 4-10 m. (12-30 feet)
The size of swell is not all that important unless they are breaking
That usually only happens in in open water with severe wind/storm situations, in which case you don't want to be there
Are you talking about wave breaks on the beach whilst launching and landing ?
If so, I'd make sure you have your rods etc very securely lashed down
Most fishing kayaks will struggle with larger waves.
The PA12 is incredibly stable, way more than an Outback, but I avoid waves as it's not actually designed to surf
I don't have a problem with waves breaking occaisionally on the PA.
I also have a PA14. I prefer the 12 as it's easier/lighter to load etc.
Beach launching through surf with a fishing kayak is not fun
If you had to make a choice for constant surf launching, I'd say the Revo might be a better bet as it will track better and be quicker off the mark getting through the "break, though not as stable as as PA or Outback.
The foredeck contour of the Outback tends to chanel water into the cockpit when you go "through" a wave which I don't particularly like.