Mod ideas?

I have a 2002 forester GT with 180,000 km (~110k miles). It comes stock with an EJ205 turbo engine and I’m wondering what are the best options for bolt ons for this car? I’m wanting to make it a bit of a sleeper. Stock it has 130kw (170hp) and 245nm (170 lb-ft) of torque. I’m looking to bump the power to ~250-300hp. Any help would be appreciated, thanks!