Now i ofcourse prefer to get an answer from someone from Larian, but if you are kinda sure its fine to :P
some of the latest updates made it so that a 50 dollar or higher pledge would recieve "message in the woods" and indeed all the tiers above 50 dollars have it..
however.. if you pledge 60 dollar, but choose the 40 dollar tier (20 dollar reserved for another copy.. can never have enough copies XD).
Would it look at the total pledge and thus give the message in the woods.. or would it look at the tier and conclude its not high enough to recieve it?
