I don't think it will be a problem. Just know the dates when asked . The govt. would be able to verify them

F1 is for unmarried children over 21 of US citizens while F2B is for children over 21 of lawful permanent residents so they are mutually exclusive

You can bring boarding passes as proof of your trips abroad

Explain what you just wrote above as to why you intend to take courses at a community college. Make sure you establish intent to return and strong...

Getting approved for a J1 waiver doesn't get the J1 visa expired. It waives the 2 year home residency requirement prior to changing to certain...

Pay stubs from the current H1B employer

It is not mandatory but highly advisable to have an attorney for the change of status to L2 so that is for you to decide.

Minor dependent children listed on his tax return should be included in his household size. I suggest you work in private with an immigration...

If the petitioner/wife is a US citizen, a separate I-130 should be filed for each stepchild. I suggest you work with an immigration attorney

I-130 is filed in the petitioner's account