blase,

Do you have any upcoming business or other travels? If so, just 4 nights at $100 HI properties can net you 22,000 points without batting an eye.

Assuming $100 property =1000 pts per night (x4 = 4000)

Sign up for the current stay 2 x earn 4000 pts promo = 4 nights can get you another 8000 pts - keep in mind to get the 8000, the 4 nights will need to be in different hotels or at least no consecutive nights at the same hotel

Also, sign up for the Stay x nights get 10000 points (sign up for the Stay 4 nights option)

Another 4 nights (at diff props or at least no consec night stays at same prop) will yield another 12000 etc ...

Obviously, this gets you more than you need. If you are only going for the 8000, then all you need to do is spend the 4 nights, changing hotels at least once and be signed up for the stay 2 x earn 4000 promo.