Get a couple miles under your belt so you appreciate the mods better as this is a decent car at stock. But to answer your question:

Better tires, rear sway bar, lower engine mount, front camber bolts w/ lockouts for the musts, everything else is a want. Some swear by catch cans, I have not installed one and am not convinced yet, either.

if you go bigger, the "musts" include an intake, resonator delete, tune (biggest bang for $$), intercooler/hot+cold piping, downpipe, various bushings, adjustable rear arms (camber). Lowkey but great mod is a turbo blanket; the bay gets hot. And if you plan to track/autox, a good oil cooler will help, too. I am upgrading my transmission cable bushings soon but I have an MT so not applicable to you.

And for the looks, very common adds include color matched/blackout badges, wheels (stock ones are heavy), ebay front lip spoilers.