getting 3GS 3 weeks before contract date?

hi all,
i'm trying to figure out a "creative" way to get the 3GS on friday at the $199/$299 pricing even though my contract isn't up until july 12th. i've gone into the at&t store and asked them nicely, i've called at&t, etc, but they all keep telling me i need to wait until july 12th.

i've thought of a couple of options that i would like feedback on.

1) buy the 3GS for $399/$499 on friday, then return it within 30 days, then buy it again on july 12th for $199/$299.

2) my girlfriend is not in contract right now, so she can upgrade at the lower pricing. is there anything i can do using her account to allow me to have the 3GS?

3) sell my 3G phone and recoup some of the higher pricing.

does anyone else have any better ideas or feedback on my current ideas?

thanks in advance for any help.

...josh