Dude, you need to seriously rethink this.
Monkeys make TERRIBLE pets. They look really cool on TV and in movies where they have professional trainers and they're able to edit the film later on, but in real life, they suck.
They are nasty, they bite, they scratch, they throw their crap at you, they get into things, they steal your stuff and hide it, they break your stuff, they scream, they smell bad, they cannot be housebroken and have to wear diapers - which YOU get to change.
I promise that if you get a pet monkey you will HATE it before a month is over and you will be looking for ANYONE who will take it. It is like having a 2 year old with ADHD on crack - who will never grow up.
Please rethink this and do some research. You will regret it.