build me a website

i'm a strength and conditioning coach and train my clients face to face , i want to bring my business online and would like to create a fully functional website , so i can interact with my clients. my clients can access their training program , nutrition plan , interact with me , and book their session directly online ( or even make amendment of their booking ). this is for my face to face client, i would like to introduce online training with something different that never been done before. first step is to make an online assessment with the client , this based on picture and video , instructions will be given to the clients or even can be done with Skype , following the postural and movement assessment , i will create the training program and nutrition plan, so people can start to train straight away . clients need to have a personal login to upload theist picture and video for me to be able to make adjustment on their program or nutrition. face to face client need to have the same access so they can keep track of their progression with picture , assessment and look their program if they need. website will need to have a kind of forum where people can ask question , or share their experience with each others, i'll be able to interact with them. the website will need to present my activity and give an idea on how i work with my clients and how i can achieve extreme results with 99% of my clients ( online or face to face )