Napoleon's Australian Victory

Overview
On the 4th of March, 1804, four hundred Irish convicts faced fifty-seven soldiers of the New South Wales Corps in what would become known as the Castle Hill Convict Rebellion. On OTL, the soldiers defeat the rebellious convicts in less than an hour. But what would have happened if the convicts, with their vastly superior numbers, defeated the military, and took over the colony of New South Wales?

In Europe, Napoleon realises the Continental System is not working. In OTL, he invades Russia in one of the worst military disasters in history. But what if he turned his atention to the source of the problem, Britain, and again laid the plans for an invasion?