about the quality of the shots, i would say a fast pace was better because slow paced tactic becomes often trouble with the clock which leads to pretty bad shots.
the way to beat a full court press is to make sure that your PG has good handling skills (dribbling)
in regards to dealing with a team that uses push the ball, if you've got good defense, throw a full court press on them in order to mess them up and create turnovers