318 crankcase breather question

So I have the Mopar performance covers. I am trying to keep everything as clutter free as possible.
The covers come with oil fill cut outs only.
Can I just put a filtered breather in one of the holes and leave the fill cap on the other side?
Is pcv needed and can the carb connection just be capped off? Is the pcv needed to run right.
Also. I have a Edelbrock performer intake. Okay to just block off egr?
No emissions on my age car.
Thanks
Pics would help