My F1 VISA expires April 2018 and I have my STEM OPT extension till FEB 2019. I would like to go to India for about a month in October 2017, which will make my VISA validity around 5 months while I re-enter the U.S, Is it safe to travel? will there be any issues at port of entry/immigration when I re-enter? I am currently working for a desi consultancy and have a job.

Please tell me what all documents I need ?
How safe is it to travel ?
and also is the port of entry/immigration easy/lenient/safe in Abu dhabi ?

Thank you