Creation of a gaming community website

You need to create a gaming community website. I would like to see the following on the website. The site is aimed at people who play on PS4 and Xbox One consoles. By registering, a person links his account psn or xbl.Then from the actual games for the community and the chosen platform (console), the person chooses the games of interest to him. Which he will watch and play for. Find friends from among registered people, you can subscribe to them. Then, based on all the selected information, a person on the start page is formed a feed from news on the selected games, friends' posts on which he subscribes, with the opportunity to comment on them. I would also like to see the trophies section on the website. Rewards for performing certain actions. Write 5 posts, fill out a profile 100% and so on. Play on your birthday, get 3 trophies (in a game on console) in one day and so on. So that through binding to psn or xbl trophies on the site are tied to actions on the console and games. Another of the most important (and perhaps most important) things is the collection of joint activities. A person chooses the game, activity (which he wants to go), tags his character (class, level, etc.), time, the number of people needed and thereby forms a kind of card-query. All these cards (messages) are formed into a tape, and the tape is visible to everyone who subscribes to this game. Forum or chat what for communication and small things based on the above. I also want to have a rating of registered users. Any activity (posting(5), comment(1), evaluating a post or comment(1), inviting people(15), adding friends, participating in a team or gathering it successfully, receiving community trophies, participating in a survey) is awarded points and forms an overall rating from all registered members. I would like to know how much this is feasible and the main approximate cost. Thank you.