There is an accelerated training outfit located in Las Vegas called flyaccelerated but they dont do the professional pilot loan thing so it has to be cash or credit card. If youre looking to get it done quickly, they are your guys.
Checkride pass fail rate should be in no way used as a metric for failure as a pilot/CFI! Some people just simply freeze up or otherwise let their nervousness get in the way of what would normally be a sucessful checkride and there is no way around that!