PA Equipment needed to run charity quizzes

Hi I'm Tony. I've been a quizmaster for many years but this year I want to push it to a new level. My aim is to run multimedia PowerPoint based quizzes around my local area in South Wales to raise money for Cancer Research Wales. To make this a real success I need to do a spot of fundraising for myself first. I need to buy a small PA system and microphone to take around the venues which is why I've set the amount I need as low as £200. Any extra money raised will be passed directly to the charity. In short, I want to make this as professional as possible and this equipment would really help. Thank you very much for reading this.