Get people to read it and comment on it, seeka professional, etc. Give it the best chance to be liked. Never send out a first draft. I wish you the best of luck. I also need to know if you need help writing, or if you some notes to help you get down with the writing part.
Period pieces are the most difficult to sell in Hollywood.
There was a glut of period pieces based on classics, but aside from that they are tough. First, think of who you want your audience to be. Then direct the piece to that audience and make sure that it only suits that audience. Then, keep to the essence of the period. Make sure the dialogue suits the period, etc.