Any way to connect multiple bluetooth controllers? (N64 emulator on Nexus 4)

[matticusnicholas]

So I would like to have a game night with some friends using my new projector.

I would like to know, first off, if there is a way to connect 4 bluetooth controllers to a N64 emultaor on the Nexus 4, and what controllers you would recommend for N64 gaming through the Nexus. I would like to spend $25 or less on each controller if possible.

2nd -- Which N64 emulator will work with my desired setup?
3rd -- What inexpensive MHL (I'm guessing?) adapter will work with the micro USB on my Nexus 4?
4th -- Anything else I need to know? Or your general opinion in general.

 

[NYGiants84]

Any update on this? Specifically more than 1 controller to play mario kart 64 on the nexus 10...