You'll be charged once the Kickstarter campaign is completed! Don't worry about having the money the day you pledge, the charge will not go through until the end date (May 9). If the campaign is not funded, no charge will be collected.
Yes!! Of course! The charge will show as pending until the funding period is over. Once it is over, if it is funded 53 Peaks is rewarded the money after the orders are processed. If it goes unfunded then the backers are not charged.
Don't see the answer to your question? Ask the project creator directly.