It's not possible through a single account to pledge to more than one reward per project.
However, there are two options:
1. If you have two email accounts, simply sign up as a guest or create another account under the different email and re-enter your payment information as you make the pledge.
2. Add the pledge amounts together and manually change it as you pledge to one of the rewards. Then forward us your pledge confirmation with a note to email@example.com letting us know you wish to have both and we will fulfill your order properly once the campaign ends. (Example: If you would like to receive "All three videos"($147) and then also sign up for a workshop with one of the artists ($590), just add the two together 147 + 590 = $737 and manually type in this amount as you pledge to the workshop reward.)
Please email us at firstname.lastname@example.org with any questions.
The rewards will be delivered immediately following the campaign after Kickstarter has transferred the funds to our account. The approximate time frame is 14 days so this sets the delivery date to Mid August.
We have had a few requests to offer physical DVDs and are open making them available, however, it will likely be a while before we are able to do so. If this is an option you are interested in, please email us (email@example.com) or make a comment so we can better gauge the need.