First off, a 90 and 93 integra have the same length dipstick. Get the correct one for the motor.

Second, the pcv system should be connect like this...

Hose from middle of intake runs down to the valve which will sit in the circular metal bracket between runners 3 and 4 on the intake manifold right next to the head. This hose attaches to the top of the pcv valve. Underneath the PCV valve, a hose runs from there to the box...looking straight down at the box, the hose goes to the right hole.

As for the valve cover, you can run just a little breather filter deal on that and be fine. With the amount of blow-by you are having I would NOT connect it to the intake arm like the factory setup is done as you will be blowing oil back into the intake manifold causing higher intake temperatures and more chance for detonation and sparkplug fouling.

Buy a helms/haynes manual...why do I have to say this in about every other post I make on here...