NBAA 2010 Jet II (10-20k lbs) Chief Pilot average pay is $94,951 with first quartile @ $80,000 and third quartile @ $105k. ProPilot 2010 shows $79k as average for a CJ1/CJ2 Chief Pilot and $88k as average for a CJ3.
$80-90k is probably a realistic range for that aircraft.