Query regarding India Travel

Hi,
I have a query regarding India Travel and wanted to confirm, if there won’t be any issues with traveling to India.
I am currently on a valid F2 Visa and have an I20 that is valid through December.

I have also applied for an H1B Visa and it currently shows RFE Status.

I have made travel plans to India for the month of September and planning to travel on my F2 Visa.

Below are my queries:

  1. Can I legally be outside USA, while my H1B Visa is getting approved and enter back on a dependent Visa.
  2. If I return on 30th September, will I have to get my H1B Visa stamped (incase it gets approved)? What are the risk involved?
  3. Will there be any Immigration issues later, once I reach USA? Say in the month of October or so once I start working?

Thanks,
K