Definitely do not remain a CFI if you can make it to an airline. CFI jobs are only paying well right now because of the severe lack of qualified applicants. As soon as the majors stopped hiring, the regional airline hiring will slow to a crawl and thousands of pilots will be applying for CFI jobs again...just like after 9/11. Then the flight school owners will lower the pay down to $10/hr again and you will be working that same CFI job for less than $15,000/year. Get the turbine experience while you still can.