My current U.S. passport doesn't expire until 2016, but as a result of increased travel this year, I only have 4 boxes on separate pages open for stamps.

I'm going to India again this month ... I know there's an entry stamp, exit stamp, and then the entry stamp for the U.S. Will there be any problem with that? I know some countries require a certain number of pages, but can't find if India has that rule.

FWIW, I also have an OCI booklet, and my OCI Visa is in this passport. I'd rather renew when I return from India rather than rush to renew right now.