Well before you start looking for boats, ask your wife what she wants to get out of it. And you as well.
When I was younger, we had a Sea Ray I believe. Never had problems running or anything. It had a cabin, with 2 “bedrooms” underneath. Well, one big bed when you walked down the stairs, and a little back room. It was nice when my parents wanted to get away. They’d stay over night out on the lake. It was also good for tubing, because it had power. The back of the boat also had enough room for about 6 adults, plus the driver.
Here are some boats I quickly looked up. Examples of what you’re gonna get with 10-12k. Or even a little less.
http://buffalo.craigslist.org/boa/753667676.html No cabin
http://buffalo.craigslist.org/boa/749811194.html Cabin
http://buffalo.craigslist.org/boa/748204851.html Cabin