You can check out smaller airlines such as Great Lakes their minimums are 50 multi, not sure on total time I know it's less than 800 tt. Great lakes flies Brasilias and Beech 1900. They are the only airline I can think of that does not require a minimum of 100 multi (there are probably more but I can't think of any right now). More multi time makes your more competative and it opens up more options.
You could get some multi time by flying day VFR 135 when you meet the 135 mins for night multi time sky rockets in no time, now you possibly have a better chance of getting hired than a regular cfi with no experience other than teaching. Good luck.