Useful load is only 384, with full tanks. I'm thinking that I will always be a bit over gross except when flying alone.
That's typical for a 150 or 152. You have about 460-480 lbs of useful load. If you mostly fly alone, carry full fuel. If you have two big persons, then you'll have to carry less-than-full fuel and take shorter trips or stop for fuel more often on a long trip.