MeathC, have you requested your own Tax credits for the year from the revenue and uploaded them to Sage? Is your wife currently working? If not you can get her tax credits transferred across to you. This will also increase the lower 20% tax band to €42,800.
What is your PRSI code? As you are the sole director I am pretty sure this should be S1 and should not be paying employer PRSI.
As you are the only employee being paid through the company your P30 quarterly returns should be identical for the 4 periods unless there is a change in your personal circumstances or the tax rates/allowances. Sage will allow you to generate P30 reports that can be copied directly to ROS.
If your accountant is not willing to do this for you I would consider getting rid of them and asking someone who does know. Your needs seem to be straight forward and uncomplicated.