If you're dead set on buying mining equipment that ships in a week and using your credit card, I'd recommend this company:

http://minersource.net/

Not the best prices, but should be on your doorstep in less than a week and you can use either bank wire, BTC, or credit card to pay.

Also, if you're just starting out, I'd recommend one of the smaller miners like the Rockminer R-box or Antminer S1 to see if mining is for you.