Matt, I genuinely think your best option is to work out a way to grin and bare it for the next few months, and even pay the 1 month penalty fee.
There is far too much risk and potential money to be lost for you in the long run, all for the sake of a poxy Corrolla

There will alomost certainly be an Insurance short fall on top of the other costs I mentioned, and another thing I didnt say is that it can sometimes take the Insurance Company several months to agree a final figure, and during this time you will be expected to keep paying your rentals or they will take you to court.