Advantages of going pro se: You save the money for the attorney
Disadvantages:
-the courts still demand that you file all the paperwork correctly. The pro-se clerk at the courthouse might or might not be helpful, but you get no slack here: One missed deadline, one missed form, one thing wrong and you look at having your case dismissed, a summary judgment entered against you and the like. There are a lot of self help books on the market though which teach you how to draft a summons and complaint and so on. Still, this can be tricky.
-An attorney (if he is good) knows the courts and how things are done, especially in smaller districts he might know all the judges and their peculiarities and idiosyncrasies. It should not matter, but it might. You on the other hand go in there for the first time in your life.
-You probably face an attorney. Even if the judge is sympathetic, he has to be neutral and that means he will not help you when you get stuck. Your adversary probably is an attorney who knows how to take advantage of that.
-You are on your own in the very important pre-trial phase. An attorney should know what to do about discovery and all the pre-trial motions which can be more important than the trial itself. You don't. You also will face deadlines which might become serious if you try to juggle litigation and your regular job. An attorney has smart books and tons of experience, his computer is full of discovery checklists telling him all the questions he is supposed to ask of witnesses and the adversary to win your case. You don't and might easily miss a decisive question.
-Your attorney might know when it is a good time to compromise from experience with the other players and with similar cases. You don't and might miss that opportunity to end the litigation.
So, my advice is: Yes, you can go pro-se, but you should really know what you are doing, you should diligently prepare which means putting in many many hours and you better have a very good case. Don't expect anyone in the courthouse to hold your hand.
If on the other hand your case might go either way or even is a long shot (as judged by common sense) you better go with an attorney.