5. What is the most efficient and best way to document my findings : Blog related posts and if possible Vlog channel
It may not be the most efficient way, but I'd apprecieate a topic here on Bitcointalk.Quote
6. How to spot ATM's or where I can get cash for BTC and so on ... ?
I think this is cheating 
Converting to cash is something you can even do before your trip, I wouldn't count it as using Bitcoins.
If you travel through the Netherlands: at https://www.thuisbezorgd.nl/en/ you can order food online from many different restaurants and pay with Bitcoin.