Are you planning on releasing it here on Itch too? Kickstarter only offers direct card payments, not something like paypal or other payment providers, at least from what I saw.
Viewing post in Coming Soon: Advanced Kinks & Cantrips
We're dead set on trying to have things fulfilled for backers by end of year, but we'll put up the sequel when we send out the PDF to the backers which will happen before then due to shipping times. I'd guess sometime around the fall if our production schedules continues to be accurate. We'll definitely put out an update as we get closer and when it happens.