Max....
I doubt this is what you want to hear, but if anybody comes forward and says they can do that....well they are most likely not someone to take advice from.
Best advice would be to suck it up and pay the $600 that you owe (assuming that is the case) and take some time rebuilding your bankroll.
Still, it sounds like you are determined to take a shot with your last hundred, so if you must do that, obviously a three team parlay gives you the best shot of accomplishing your goal.
I do wish you luck with whichever three team parlay you end up with (if that is what you do)and if it hits, I hope you take a day or two to catch your breath.