You typically can't overnight in a playboat. Both of the boats you listed are more of a river runner, and you can overnight but need to pack super light. If you want a whitewater/camping boat you really need a creeker.
That Kinetic is a late 1990's design. IMHO not worth more than $200.
The Inazone 222 is a more modern (albeit 2000) design. IMHO it would be a better boat and should fit you. Go up to $300-400, but see if the seller will throw in a skirt and paddle.
You can find newer design used boats out there. (I've never bought a new WW boat)