RFE
I should have mntioned that without EAD you still can get a job on H-1 if the new employer is ready for that.
About the RFE, note that your GC is applied for the FUTURE job. You need to work for your employer ONLY AFTER THE APPROVAL OF 485 (GC). It is only a coinciddence that you are already in the US and applied for GC. Now, if you have completed six months, according to AC21 (and lot of questions are to be answered by INS on this), you can change your employer. The salary is another for which the INS memo said nothing (only the category). So it is anybody\'s guess, but I think with the current economy it can be convinced in case of RFE.
Best,