What would be a typical salary for someone in my current position?
The fact that you are asking this 18 months in to the job is kinda scary....
In reality the sales, type ratings, etc stuff means nothing because you are already doing the job. Also the fact that you do 2 positions says it may likely be a 2 pilot no mechanic job? You may be looking at getting, at best, average Learjet Captain pay for the area? Only you know the quality of your operation. Theres small jet (lear, hawker, citation etc) pilots who make 75K, theres ones that make 200K. There is no norm. Every pilot is a Chief Pilot and every mechanic is a DOM.
I'm in a metro area also and call relate that the NBAA numbers seem a tad low from what I have seen, if you judge by them. Then again, I personally shop QOL over a number. Luckily the 2 often go hand in hand.
The time to negotiate salary is PRIOR to taking all these positions, after that you are usually dead in the water as far as large, meaningful increases in anything.
Pilots are notorious for wanting a job so bad they take it at a rate they truly dont believe will stick and run along under the bizarre mentality that "I will get a large increase after a year or so" "we are looking at a bigger plane" etc etc..It usually leads to frustration (not that this is your situation BTW)
Most large pay increases come with taking the experience and moving up in your career. Nothing wrong with that. If you are their star, they cant live without you type employee you may pull off a large number...there are plenty of guys running single corporate jet departments for nice people and high QOL making 200K or better.
BUT, since you are asking these things now, be prepared to get that deer in the headlights looks if you ask to double your salary because some hokey NBAA salary survey says you should be there....
(but you're already doing the job those type raises dont fit into our corporate structure!)
Good Luck!