On Kickstarter, it is only possible to pledge to each project once from a single account. Accordingly, backers can only choose one reward tier per pledge. However, you can change your pledge amount and reward selection for as long as a project is live.
If you want to add an item from the accessories to your pledge, you need to click „Manage” and fill in the additional amount (for example, if you buy Cmoar Set for $129 and want to purchase also the Gamepad for $49, you need to fill in $178.) There’s no possibility to add an additional reward, you have to do this this way.
By doing so, you can combine items and accessories bear the costs of shippment just ONCE.
Next, you’ll let us know in a survey what the accessories of your choice are.
Another thing is that those of you, who managed to get one Early Bird and are willing to get another can do this by following the above mentioned steps :-)