Farsight has done remote viewing of the minds of different leaders such as the Pope, Hitler, and Zeus. Can one be done on Siddhartha Guatama? Perhaps one just before his enlightenment and one after he had attained the realization that he had become a Buddha. What was he thinking? What was his state of mind?

Nice idea.

In the 1990's, Courtney Brown published two books on remote viewing, Cosmic Voyage and Cosmic Explorers. All the information presented in these books come from the rv work that Courtney himself performed in those days.

He remote viewed some luminaries like Jesus, and the Buddha. But I don't remember him rviewing the Buddha in the circumstances that you are suggesting. However, I think it might be worthwhile for you to check these two books.

They are free in PDF format, and the link is provided underneath.

http://courtneybrown.com/publications/speculativenonfictionpubs.html