Do yourself a favor and choose the program you really think you have an interest in. Current you wants to avoid speaking and stuttering to save yourself from embarassment, but future you will hate this decision and live with regret for quite a long time. You realize you can talk to your professor or email them directly to see if theres a work around presentations. Please change your perception of stuttering or you will live a very shackled and tormented life. Not everything is black and white like you think. Most professors and faculties are very accomodating. Not a humble brag, but I graduated with the highest grades in my programs because professors let me do additional assignments for those presentations I felt I just couldnt do.