Hi lad. Nah never explored Estonia on the bike in terms of multi-day trips, since it's been to bits and pieces most of its life due to my inadequacy. Just done some trips around Tallinn, Pärnu and some Tallinn > Tartu trips and back.
Would love too one day though. And I'm glad the Estonian lingo fascinates you.
I've also found it quite enchanting how they can be so similar and often understandable, while being jibberish the next moment
You happen to come across the sea often? I don't think I'll get my two wheels ridable this Fall, but I'd be up for some trips around Estonia (or Finland) in 2016 Spring/Summer. Could organise a small CF meetup