pjiang, XBT: urgent help- What will happen if I file I-485 in th

I am H1b holder now. I entered into USA using a Chinese passport and j-1 visa with annotation "Preminant Residence of Canada. Bearer is not subject to 212(e)". My lawyer told me, all evidence showed I am not subject to two year residence requirement but suggested to apply for J visa waiver advisory opioion, and file I-485 with J visa waiver advisory opioion case number.

Should I file I-485 now following lawyer's suggestion? Will USCIS reject or deny my I-485?

Thank you for your advice