What should my W4 look like if I'm married and want to receive the maximum refund when filing?

I will be getting married this year and I'd like to know if and how I should adjust my W4 with my employer. For this tax year - even after marriage - I will be the only earner and we will have no kids/dependents. I would like to have more taxes taken out of my paychecks so that I can receive the maximum refund when it's time to file taxes. What should my payroll withholding status and number of allowances be changed to? Currently, my withholding status is "Single" and number of allowances is "0".