I have many clients for whom I make Google Adwords Campaigns like the one you describe, with great results and I have the time, interest and expertise to help you. My proposal is to use the budget minus my bid (aprox E$127) to invest in the adwords Campaign monthly. We can try it for one month but, in my experience, campaigns work better in Google when they are planned as, at least, a 3 month project. My bid represents the payment I would want for each month of work.