Based on studies of other Tapas series doing Kickstarters, expect only 2.5 to 3% of your subscribers to actually financially support a print campaign. The most common giving level on Kickstarter is $20.
So if you have 10,000 subscribers, you may be able to sell about 300 printed books, for $20 or $6,000. After approximately $600 in Kickstarter and credit card fees you will have only $5,400 remaining to print and ship those books.
Publishing is notorious for thin margins.