PCV Valve, to connect or not?

I have a question for the "most knowledgable folks" on-line at "For A-Bodies Only!

I have a BG 650 Claw on my 73 Dart 340. The car did well on it's
annual compression check, and pulls 7.5" HG with the curb idle adjusted inward to 1.5 turns and then richened to 1 5/8s (or somewhere in that neighborhood) with cam duration of 236/244 at .05".

The car, being a 73 model, is equipped with a Filter on the left valve cover,
and a PCV valve on the right valve cover. Right now I do not have the PCV valve connected to either the air filter assy, or the vacuum port on the bottom of the carb. I understand that the PCV valve scavenges blow by and then consumes it through the combustion chamber.

Question 1. By running the car with the PCV disconnected at high RPMs, am I causing a pressure build up in the Crankcase that can affect my performance.....or cause a discharge of smoke?

Question 2. My old air cleaner had/has a port for the PCV hose. (right now it is sealed off) I note that my Claw Carb has a vacuum port at the base. If I decide that it is in my best interest to hook up my PCV, , and use my present Air Cleaner port (old edelbrock) then I'm pulling the scavenged air into the air cleaner, then the horn and mixing it with fuel, which would give me an artificially lean mixture in the horn. If I hook the PCV hose to the base-plate on my Claw, then I'm pulling the scavenged blow-by into the plenum, which is below my fresh charge of Air/Fuel. Which is the best route for hook-up? Also, I use Rush Filters. Are there any advances in the actual air cleaner housing that can create additional efficiencies?

As always, thanx for any input!