I want you to do a 50 wide and 115 ...

I want you to do a 50 wide and 115 long rectangle as an arena, within the arena i want one side to have a blue team and the other side t be a red team, in the middle i want a circular structure with walls that will surround a gold block, i also want paths leading from each team base to this structure i would also like bridges above the arena that can lead back to the base aswell