As well as the inflation risks arising from the overly expansionary monetary policy that this would entail, there is another important reason for prohibiting such financing in a monetary union where the individual member states retain fiscal policy sovereignty. By supporting individual member states via the central bank balance sheet, monetary policy would redistribute financial burdens between the taxpayers of the different countries.
How rapid can growth be and still be sustainable? And how far can we reduce our unemployment rate? Given the complexity of the factors affecting economic performance, it is not possible to make precise predictions on these matters.