Welcome to redline ownership! The car looks clean, and I'm kind of digging how the Saab wheels look on the car.
I would have to say gun for a stage 3 kit, and tune (Hp tuners going to eat a lot of that budget). Check if your intercooler pump is working (plenty of guides online) and replace if needed.
Then spend the rest with supporting mods and refreshing the car (spark plugs, oil change, fuel filter etc), option b kit, dual-pass, etc zzp and these forums have some great build guidelines.