Help Build a Unreal Engine Game with Blueprint

I would like some help to create a game in Unreal Engine. Im thinking a simple game where you play as first person/third person as survival and chop trees, craft weapons and defeat monsters. You will also find buffs when killing monsters such as "Extra Jump", "Increased Attack-speed", "Extra Sprint speed".
You will also be able to play in teams.
Main goal of the game will be to survive as long as possible.
Im thinking "low poly". Very easy graphics.

Please provide me a timeline and cost for this project.