If you want to find a lot of information on O'day boats, you should visit the odayowners web site, which is on line at
Oday sailboats Owners Web for Oday Sailboats and O'Day Daysailers
There are model specific questions, etc.
To the best of my knowledge, the 322 is an Ok boat. Nothing special, no serious problems. It has a wing keel, which is great for shallow water, not so great for performance (but not bad either). It is a modern design, with a swim platform, rear head, rear 'owners stateroom' etc.
Personally, I like the O'day 35 better, but they are more money.