In fact set it up in a way that makes Pre-Sales the main attraction. It would make things so much easier.
When I was running my ToDoCal kickstarter the biggest pain in the ass was trying to set up prizes and calculating the cost to fulfill them. Because kickstarter isn't set up like a store that accepts pre-sales I would have to double the cost of all my "prizes" so as to buffer the cost of fullfilling expensive orders. Shipping to Chicago would be $6, shipping to San Francisco was $10, international shipping was $16. But I can't charge different people different prices, so I had to forcing everyone to pay a higher price to keep it safe.
By designing Crowdhoster as a pre-sales store you can eliminate that completely. USPS shipping api's can calculate the exact cost each backer should pay down to the penny. You could offer your backers discounts based on bulk orders and have an idea of where your products are going so you can design packaging to be more efficient.
Basically make a pre-sales store with minimum order requirements where anyone can place orders and their card is charged only when the minimum order is reached after X amount of time.