I have a wide range of designs in my catalog so I will easily be able to come up with additional stretch goals if this campaign is more successful than I anticipated!

Both during and after your initial pledge, you will be able to add items to your total order by selecting from any available add-ons in the rewards section. To see a list of the add-ons available and their pricing, please head to the story tab and scroll down to the "Add-Ons" section. Kickstarter has also introduced a brand new Pledge Manager, which will theoretically allow you to add Add-On items to your pledge after the campaign is over. I still recommend including Add-Ons in your initial pledge to ensure you get exactly what you want, as well as increasing the chance of unlocking stretch goals!

Below is my rough estimated timeline:

August 1st: launch date
August 21st, midnight: campaign ends
August 28th: cards charged, funds collected
September 5th: surveys sent and collected
September 9th: merchandise ordered, designs adjusted if necessary
September 10th~30th: production and shipping
September 30th~October 6th: product inspection, sorting, fulfillment, and shipping
October 27th: expected latest delivery date

Keep in mind this is just an estimate and delays in production or shipping can sometimes occur.
Please also keep in mind that I am only one person doing this all by myself so if medical stuff or issues out of my control arise (heaven forbid), the timeline may be impacted.
Ensuring your payment information and shipping address is correct, and filling out the survey correctly and quickly will increase the chances of you (and everyone else) getting your rewards even sooner!