It certainly would be feasible, and there are a couple of ways to make the job you have easier. One example is having a budget that is tabled sooner in the cycle, so that most of the items find their way into the main estimates, as opposed to having the main estimates and shortly thereafter supplementary estimates (A). Also, as was asked yesterday at the Senate national finance committee, when there are agreements for which funding is sought in supplementary or main estimates, indicating the year in which the liabilities were booked gives us a sense as to how long they have been on the books of the government.
I'm sure I'll be running out of time soon, but those are a couple of ways to make your jobs in scrutinizing government accounts easier.