That's up to you! But know that all the Kickstarter supporters Get Theirs First, Always. Access to PDF, Book in the Mail, you'll get it weeks or months before others will have access to the game. We won't ever put you in a situation where you see Ryuutama on the shelf of your local game store before your book arrives.
Plus, you'll have access to all sorts of awesome digital extras we're producing by backing this Kickstarter!