How about starting with the engine work first such as intake, muffler, and headers? All those 3 things are usually cheap for hondas.
After that you could put in some top quality lowering springs or coilovers (make sure you only go with ground control...but springs are just a better option for inner city driving. For springs, only go with H&R or Eibach), gas shocks.
Also, most people usually go for looks, starting with their interrior. It just depends on your liking
Good luck man, and congrats on the new car!