My H1b began in October 2015. I recently started process for GC (EB3) and am filing for PERM later this month. Priority date is Oct 16 as of today.

I have not traveled to Nepal for H1b stamping yet and do not plan to do it until I get my GC, which gives me two questions.

1) The first 3 years of H1b expires in Sep 2018. Is this enough time to get through the EB3 process and get my GC?

2) Is H1b stamping required for any step during EB3 GC application?