You could do it, but I'd only recommend it if you've got a lot of buzz to begin with. I was talking to one of my friends (whose Patreon is going fairly well), and he made a great point: Patreon doesn't make you big, it shows how big you already are. I'd love to hop on and support you regularly, but I myself am strapped at the moment; I gotta scramble to get some bucks to replace my hard drive. :/
BUT! You will probably have a better shot at it than I. I say go ahead. Definitely think about what you want to offer--but don't think too hard about it. Never overthink anything, because you never know what will happen, if it blows up or not.
it's HARD to get people to support you on Patreon if you aren't already getting a lot of traffic to your pages regularly. and whatever you give your patrons has to be amazing. updating regularly is another challenge if you can't commit to it.