In all honesty it would probably take at least 10 years or longer to match your current salary if at all. You could conceivably get a commercial within a year if you have a private and work hard-unless you quit working and fly full time, but I would not recommend that. Get a cfi and ready for the regionals within another year or so and then at least 5 years to move on.
Its a tough time in the business right now So many companies went t/u recently and more furloughs on the way even from the big guys. Also a lot of competition from unemployed high-time pilots. What really helps you get hired is a friend in the right place.