Simple Chat website

I want to create a simple and userfriendly chat website where people can chat with friends etc. Features: - a slick design - when visiting the website, you get asked to either register or join as guest and pick a username - main group chat where people join when they pick a username or register, and for me the ability to add more groupchats about topics or things in cpanel - If users register, they can make their own groupchats. - If a user wants to private chat with another user they can send a request to that user, which this user can either accept or deny (or ignore) - admins have ability to ban users, IP's, and create, delete, modify and move group chats. - ability to have a password protected chat I already have hosting as well as a domain name. Unsure if i will need more hosting or a special server/vps for this. I really really like bootstrap themes such as this ([login to view URL]) so if you are able to use that its a big pro! I added a quik drawing of how i want it to look. I'm not sure how much time this is going to take so give me some price suggestions.