Mark,
As to what Everett said----
I've tried valpak with some results. However, for the cost I did much better with postcards. Many variables involved however.
This would be my advice----do advertisements that don't have monthly payments. I've been at this business for 7yrs. and I still have months here and there where it is a strain to pay bills. If you do a mailing that you control, such as postcards/brochures, you can only send them out when you have the money. Nothing will create stress like worrying about your monthly bills, and I do all I can to avoid them. I don't think it is stress that you'll need/want in your first full-time year. And let's be realistic---80% of businesses fail the first year, and you at the very least have to be open to the fact that this may happen. You don't want to work for 4 months, decide you don't like it, quit, and then be paying bills for the next 8 months on a business that no longer exists.
Please Mark, don't take this as me being negative or setting you up to fail, I am generally very optimistic. But I also believe in being a realist and planning for escape routes from worst-case scenerios. Good luck, give me a call sometime soon, been a while since we've talked. And I may be able to better help you with some marketing advice.
jon