Alpha f-8 questions

I have a few questions about the Alpha Crusader.1. Is it normal for military jets to idle at 70% N1? I've noticed this in all of the Alpha jets - is this something that needs to be adjusted in the airplane's files? I'm at idle (with my throttle handle, not on the gauge) when coming aboard, which doesn't feel right for a jet. 2. Is the F-8 as slippery and does it accelerate as fast as the Alpha jet? Coming out of North Island, I'm at 600 knots IAS in a matter of seconds. Also, I need to hit the air brakes to slow down to pattern speed. Normal?Thanks.Colin