RE:
1. ITR bars are good! 24mm front, and 22mm rear.
2. If your DX don't have stock factor even on the front, you might want to check your control arms, cuz, if I am not wrong some version of EG Civic don't have pre-drilled holes on the lower control arm where you can mount your sway bars. If that's the case, you will need new lower control arms.
3. For a street car, you rother have understeer than over steer. If you haven't figure out what oversteer is, then I think you shouldn't have an oversteer Front wheel drive car, cuz, it's gonna be a chaos.... (I don't mean to offened you, but it's very hard, to gain the control on a front wheel drive car if your tail step out on you.)
4. My suggestion for your setup, 25mm front, and 19mm rear. I think that's just enough for you to have some fun, and the car will turn pretty well, but still maintain some understeer for safty.
Just my opinion.