Decent as in Koni STR.t struts & Tein S tech springs on 255 width tires. I've got 9.75" width wheels though, so there's definitely room to grow.
I'm happy with the way it drives but aside from wider tires and coilovers I'm wondering if there's anything else I left on the table.
There is other stuff you can add, but the shocks/springs/wheels/tires are the easiest/best way to make the car better. Instead of buying other stuff, I'd get some seat time and save for getting some better shocks/springs/wheels/tires. Those four things are the "core" if your build....everything else is complementary.