Just tool around? Like fun flights? Unless you're going on a boat with a guy named Gilligan, people generally don't bring bags for a three hour tour. And full tanks aren't usually required for just tooling around. I think a Cirrus would do fine for that kind of mission. Now if the mission is 2 adults and 2 teens or older plus bags for a week and traveling 1000nm regularly, then yeah you want something with 6 seats and probably something an 2nd engine. I haven't done the math on it, but I'd suspect you could load 4 adults and light overnight bags and still go 300-400nm in a Cirrus. 800 if you stop for fuel. How often do you plan to fill the seats and the baggage and the tank all on the same flight? I think quite a few owners will tell you they bought their first plane thinking they'd be packing up the family and/or friends and going on exotic trips every month only to find that 90% of their flying is solo or with just the front seats full.