While you can use simbrief for any plane, its really tailored for jets.
The Arrow isn’t really the target market for that software.
If the Arrow is the plane you really love (I love it too), just take the time to learn how to do basic VFR flight planning and go fly it.
If you’re digging into IFR training thats cool too, but Simbrief really isn’t somthing I’d think to use for a piston private plane. It seems like it’d just be number spew.
You don’t need a flight plan at that level to go fly an Arrow. You just need to know which direction you’re flying.