My set up on my ej9 is this
Buddy Club +N coilovers (10K 7K)
Energy bushings all over
26mm front swaybar
24mm rear ASR swaybar along with the kit
ek4 front strut bar
Kosei K1 wheels 4kg each
Can't remember the alignement properly now but just a rough reference
a bit of toe out in front and toe in for the rear
More camber everywhere (more to the rear)
Sitting 0,5cm more in front than the rear
Leightweight ej9s with a proper set up (not too low, and not the nose hitting the ground) drives superb in corners. Adding some bars and fine tuning the alignement would be the next step. 0 toe for the rear and less camber for the rear too.
I would recommend to begin with adding swaybars from ek9 and then deciding for the next move. Adding big swaybars will reduce body roll and I bet you won't want to go for coils with high spring rates, thus you will have a confy ride. Lower control arms is a bit unecessary, and camber kits only for fine tuning when you are done with structural components of the suspension.