That's a big topic. It's taking me years to learn how to write comics.
Mostly, I think you should ask yourself-- If you don't feel that you can do the writing yourself, what do you bring to the table? From what I have learned a "writer" is someone who has the force of will to get a comic finished, because there's a million guys with a story or even a script.
I'm not saying not to do it-- I just think the first part of any plan has to be to work out why you want to do it, what you want to accomplish, and what special thing only you can bring to the table.