Ok basics dont touch a chip ( in this case as ECU wont accept a remap, i doubt) as it will only gain you around 5bhp. leave it till last.
induction kit - wouldnt bother, had one in my 1.4 civic and it didnt feel any different when i swapped back to the airbox when i sold it. go with a panel filter and smooth out the inside if its ribbed ( i know the 1.4 had the ribs on the outside and inside was smooth already ) and drill a 3-5 20mm holes in the bottom of the airbox. this will give :
you better airflow to the box - the holes along with the snorkel,
larger airflow through the filter - panel filter,
and the induction noise - again the holes.
another good idea would be to fit a cold air pipe to the airbox to supply it with fresh air. halfords do 80mm alu pipe for around a tenner.
Stainless exhaust frm the cat back, dont bother with the decat its not really that restrictive ( again going by the 1.4 multipoint engine '98 ).
Fuel pressure regulator (FSE valve power boost valve etc) this should give improved throttle responsise.
Cams might also be an idea - stick to a fast road profile thou.