Thanks to the information you and Mike provided, I know CANNOT leave the US now until I get advance parole, which can only be filed along with I-485.
I did check the “adjustment of status” box on the i-130 and left the consular processing section blank.
My husband can file for naturalization in 2027. According to general answer, the naturalization process for U.S. citizenship takes an average of 18–24 months.
In the worst-case scenario, I have to wait until 2028/2029 to convert the type of my I-485 to USC sponsor.
Hopefully, I don't have to wait that long.