Sure! If you want multiple of a single pledge just multiply the amount and you can get more than one board. For example, if you want two Mojo boards and live in the US it'll cost $65x2=$130. For international, please add $5 per board for shipping with a $20 cap.
Once you change your pledge amount contact me to let me know the rewards you would like. There is no way to select multiple rewards through Kickstarter.