Good advice above
Lots of good advice above and I would echo the advice of the people who have said that you should do a few practice W&B calculations........this aircraft is one of the easiest to overload being that it has four seats, a large baggage area and big fuel tanks.........fill them all and the aircraft will fly just far enough to kill you!
The other thing I would say is make sure you can find the alternate static and alternate Avionic master switch ( if fitted) by feel from the pilots seat.