Kickstarter only lets you choose one reward. You can, however, increase your pledge by the appropriate amount.
When the campaign ends, we will be sending out a survey to all the backers. At that point you will have the opportunity to let us know what extras you want.
So if you want the Softcover Everything Bundle and the Polo Shirt, pledge $130, choose the Softcover Everything Bundle, and when the survey comes tell us that you also want the Polo Shirt. The survey will also verify your shipping information and your order, so you'll have a chance then to make sure that we ship you what you paid for.