I fly GA aircraft, mostly single engine Cessna's and Piper's, on short VFR flights of a few hundred miles.
I'm usually flying Cessna aircraft with one or two engines, and "few" is 2 or larger, then I'd consider these already as long flights
Most of the time I'm using an IFR flight plan though, because VFR at or above 5000 feet (or 3500 feet AGL, whichever is higher) in Germany has to be CVFR, which basically is "IFR, but you have to be able to see the ground".
So for true VFR I'd use a flight plan of less than 100 miles and only very few waypoints.
But I'd recommend trying PF3 with IFR (CVFR) first, ideally with VCP mode 2, i.e. letting your co-pilot doing the comms for you, so you can learn what PF3 expects to be done.
So start PF3, load an IFR flight plan (without SIDs or STARs), contact Clearance (or Ground or Tower if no Clearance is available at your airport) by tuning to their frequency and pressing "0", and enjoy the ride.