Center Console Boats And More

I’m looking for a used fishing boat in MN. Help plz.?

I'm interested in being able to take it on small local lakes, as well as trailer it up to big lakes like Rainy. I'm thinking a 16ft Lund w/ motor& trailer for around $2000. I want to be able to throw the wife, kid, and gear in and go for 4 night camping trips.

1. How much horsepower do I need to be able to plane-out with that load?...the flip side is I don't want too much horsepower because of fuel prices.
2. What are some of the pitfalls to watch out for with the boat/motor/trolling motor/trailer?
3. Are there some quick checks I can do to verify the engine age and reliability, boat leaks, trailer condition, etc.? I assume I would need to take it out on the water prior to purchase?

I don't want to buy a lemon. Thanks for the help.