you forgot exhaust to complete the n00b mods. But when I had my 7th gen, I could think of a million things!
ditch the intake and header, get a turbo kit or build your own, work on suspension, full coil overs or good springs, good shocks for good springs, huge sway bar for rear, but not too big to prevent understeer caused by the bar, solid front strut bar, Maybe for the sway bar get a subframe reinforcement/sway bar combo?
Aluminum shifter bushings (if they're still made), revo short shifter, ummm full suspension energy suspension bushing kit. I can go on and on, I told myself I would name a few but I went a bit overboard.
Good I miss the 7thgencivic.com community and how we had so many people who made their own stuff and sold it. Good good times.
There are many other options as well among what I have named, when I had my 04 ex it was pretty much maxed out, waiting for turbo.
Oh, btw, if you go for the rear sway bar, forgot the rear strut bar, it'll be over kill.