The stage 2 kit doesn't seem to radical in any area; just improved in many areas. MFR has this setup and seems to like it. It's a Honda and the 700XX is really chocked up in stock form so I would say that a stage-2 Alba kit wouldn't stress it out much at all.
From my experience with my setup the bottom end of these motors are stout and the stage 2 kits should not be a concern. I constantly stayed on the rev limiter when i first got mine running because it was so crisp and is holding up fine