Mob Arena-A true and complete One

[KCB38]

I would like to build a mob arena in which players can fight most if not all of the mobs. I know how difficult it will be to get all the spawners needed, but if we just make a long stream of water towards the arena, distance shouldnt be a problem. However, money is a problem. I am not very rich, and I need investors, as well as building/testing volunteers. Please post below if you are willing to help.

P.S.- I also need a large flat area, if anyone knows of one, that would be great. If not, we'll have to build it underground.

Builders/Testers-
Myself

Investors-
Myself

[High Roller]

Once I finish my city I might have a flat place 4 u

[B1ueJ0ker]

distance is an issue, if you are too far from the spawner it wont spawn, you would need to get players to stand near them to activate them. I have an arena there are 11 spawners in the area, but becouse you cant activate them all at once the design you speak off will not work unless you get others to stand/activate the spawner while your in the "arena" other than that it's a great idea, but a challenging one. If you would like to see what i did for my arena your more then welcome
it's open.