Follow-up on my previous post. New Spark Plugs and Ignition coils did wonders for my car. However since driving the car for a couple weeks now, I've noticed a couple of things. 1) slight "Click" sound can be heard when car comes to a stop while breaking and is released. Not sure if this could be a sign of needing new break pads or not, i think it is coming from the front left wheel. 2) While the car is at idle with no AC and or lights on, the RPM seems to be around 650 or so.

Are these symptoms normal. I bought the car a month and a half ago and noticed the misfire immediately and sought to address that issue first. So I don't know how this car is supposed to drive/feel normally. Would a valve adjustment help with the RPM? Image below is what it is at . Car has 69,000 and is a 2007

 

slight "Click" sound can be heard when car comes to a stop while breaking and is released
Brake caliper guide pins/hardware
the car is at idle with no AC and or lights on, the RPM seems to be around 650 or so.
Normal