world-building Paradise Lost

Alright so this idea is a very much work in progress. Its based around someone from the modern day getting transported to another world, via Plane wreck or Cruise ship wreck in the Bermuda Triangle. The world they get transported to is an exact copy of earth but with more alien types of flora and fauna. I'm highly pulling from shows such as Avatar (the blue one) and stuff like Subnautica (in regards to the flora and fauna). The world however will not be developed and home to primitive tribes whom of which will be non hostile. 

This is as far as I have gotten so if anyone is interested enough to do this with me I would gladly appreciate it. Its a very long term intensive plot with lots of story and world building, so admins (reading this) I am sorry but this rp I would like to do offsite due to how intense the direction of the plot is going to be made.