By the time you do file to adjust status, you will get EAD and AP as part of the filing, so I suspect that as soon as you get NOA for AOS, the NOA will be AP and EAD.
One thing to keep in mind about I-485 fee, it includes AP, and EAD as part of the $1010
Currently, $395(AOS)+$170(AP)+$180(EAD) so is $765 --> $1010 (AOS+EAD+AP)
QUOTE
Q. If an applicant files a Form I-485 to adjust status before the rule is effective, will he/she have to pay for future interim benefits?
A. Yes. An applicant for adjustment of status who applies before the fee rule becomes effective will continue to have to file separate applications with fees for employment and travel authorization. Those who file an adjustment of status application (Form I-485) after the new fee schedule is effective will not have to pay the additional fees for employment and travel authorization as these costs have been included in the new adjustment of status application fee.
http://www.uscis.gov/files/pressrelease/Fi...eQsAs052907.pdf