Stik has a point.
You have the money, you are willing to take 3 weeks off work and you company has a subsidised flying club. Ask if they would comitt an instructor to you full time for a few weeks. Weather is your worst enemy in this country when it comes to flying, oh that and the cost of everything.
As for the U.S it has been done to death on PPrune. I personaly went to OBA, loved it, best experience of my life other than getting my decree absolute. I found no pitfulls or cons.