Developing a Pokemon RPG

From the scratch of developing a pokemon rpg with features like
Pokedex
Battle / Live PVP
Trading of Pokemons
In-Game Chat
MyBB Forum - Connected to In-Game Database of users
Promotional Pokemon
Pokemon Trainers (Gym Trainers too, and medals)
Map Feature (In-Game users should be able to explore the maps and catch pokemons)
and few more that can be discussed.

All the features should be in Ajax for fast load-ups