Liability claim against neighbor for starting fire due to cigarette butt

My rental home was burned down by neighbor's mistake. He was smoking on his deck, threw cigarette butt which started fire. It slowed spread to his and my homes and both were nearly burned down. It was proven by Fire Chief investigation and he has accepted his fault that he thew cigarette butt that started fire. My insurance company paid a part of my claim to rebuild home. They may go after neighbor's company to recover their payment. I am planning to file a law-suit against neighbor for remaining losses, my attorney fee (to handle first claim), time spent on case, loss of rent (while being built) and emotional distress. Is it a valid claim? Am I ok to file law-suit for these expenses? If I hire an attorney to handle law-suit, can I claim that amount too? What happens if neighbor's liability insurance limit does not cover all claims as other home owners might have also filed claims against this neighbor due to this fire. What is the order of payment for all such claims? Will neighbo