It will take you a minimum of three weeks to do an FAA to JAA conversion, you cannot book a flight test until you have a signed 170a, this can often lead to a week or maybe two between the 170a and the test.
Also I think that an FAA IR in two weeks would be unlikely, when I was hour building in the states I spoke to many FAA students who had to wait for a week or two for the flight test. More than 10 hours of IR when on the course per week will be too much, your brain needs time to take in all the new information!
Set yourself a realistic target, maybe work a three day week instead......