Nope. No funding, no book!
Backers keep their money, and the project never happens. The end.
Sure thing, whatever the reader's preference. They can receive the book in either PDF or CBZ.
To those who want it, sure. You can also receive a complimentary digital copy with the hardcover book.
However you prefer. Some readers prefer to wait to read the whole thing in one big chunk. Others prefer the installments as they're released.
After the campaign is over, I'll be sending a survey to backers to find out who prefers what.
Don't see the answer to your question? Ask the project creator directly.