The answer to that question lies with you, not me. Ask yourself the following question: Do we as parliamentarians have sufficient time to undertake a responsible review of the government tabled by government? If the answer is yes, then don't change the timing. Only if the answer is no, and you can explain that no, should you consider moving it.
As a colleague of yours said earlier about human nature, giving Parliament two more months does not mean that Parliament will actually have two more months to discuss the budget.