Why not wait for few more months until you get greened. It took about 6 months for me to go from filing a 485 (based on NIW) to receiving my card (FP waived since I already had my biometric done during TPS).

If you have to then i think using usual route H1-B/ AOS travel process is best. In my mind once you use AP you abandon other status(not sure, you can check with your lawyer).