I like the idea conceptually. We just need to be careful with the facts. For example.
1. That he is the only one who can beat Obama -- There is NO polling that shows this. In fact the RCP Average has Paul losing to Obama by 7.6, where Romney loses by 4.5
2. Romney and Santorum will not get the youth vote away from Obama --- Exit polling shows that Romney and Santorum both have won the youth vote over Paul is many states. For example in AZ, 57% of the youth vote went to Romney, only 15% to Paul.
3. The Ron Paul supporters will stage a massive write in campaign or vote 3rd party and cause Obama to win a second term. --- Massive is an overstatement. Paul has received just over a million votes in the primaries, and will likely double that when all said and done. If the write in campaign would match his primary total, that would account for less than 1% of the general election turnout. Additionally, exit polling suggests that only about 30% of Paul voters will not vote for the nominee.
4. If the convention comes and there is no candidate with 1144 delegates, that the Paul supporters will create a scene and force a stalemate that will embarrass the party and force multiple rounds of voting until Paul wins. --- the chances of a brokered convention are so slim right now, this is almost a moot point.
So don't get me wrong, I like the Patrick Henry type speech, but it needs to be based on facts and not opinions or speculation. The four points you laid out are easily disputable, which is why it wouldn't be the best idea to run with those four points, since they can be very easily countered. I would suggest that it is far better to focus on the main issues of the day - economy, taxes, jobs, etc - those are the points where Paul can make an impact.