[ThirdSight]

If you're saving money for 3 years, you'll have enough to stay there for at least 2.

Seriously, Kerouac it and go at the end of the week if you've planned it out so far in advance. 3 years is way too much time to plan for a 3 week trip, so relax, save a bit of money, wait for the economy to change and shift before looking too intensley at prices, and then just go.