23 Nova runs well in a good chop. 2's and 3's are great fun. Mine is fine with that at WOT. But, anything bigger, and it can get rough. I've been out in 4's and 5's but you really have to concentrate and keep the boat on top of the waves.
Take the swim platform off, and the 23 Nova (at least a 1995) is about 22 1/2 feet. The boat is small, but with it's weight at 4000 lbs. it will handle 2/3's just fine.
Take a good look at one when it's sitting on a trailer. They're stout as hell. Deep and wide, and they are comfortable. With some hp, real sleepers . They are an excellent lake boat. But if you're going to run off shore, or on the Great Lakes, I'd go bigger. Just MHO