The Publishing Plan

The group has been discussing how to best format publishing the Mord Mar campaign setting for a while now. I stumbled across this Kickstarter:
https://www.kickstarter.com/projects/1409961192/dungeon-crawl-classics-the-chained-coffin

Which got me to thinking more about how I want to format for publishing. Currently, we expect the Kickstarter to look something like this:

PDF version of Mord Mar Source Book $10
PDF version of Mord Mar Source Book + PDF of all Stretch Goals $20
Physical version of Mord Mar - Soft Cover $?? (similar to Dragonspear Castle)
Physical version of Mord Mar - Hard Cover $?? (similar in size to Castle of the Mad Archmage) 

Stretch Goals:

XXXX$ Mord Mar Poster
XXXX$ Mord Mar Glossy Maps (Side View, and Attraction Map)
XXXX$ The Goblins of Mord Mar: To the Citadel (Module MM1A)
XXXX$ The Goblins of Mord Mar: Ironfire's Keep (Module MM1B)
XXXX$ The Goblins of Mord Mar: The Corrupted Church (Module MM1C)
XXXX$ Mord Mar Monster Addendum #1 (A booklet with 20ish new monsters for levels 1-3)
XXXX$ Turn all the Stretch Goals into a Boxed Set

Long term, I expect somewhere between 10-15 total Kickstarters. I would like to find a way to reward perennial backers, like alternate cover colors or art. Maybe an additional Monster Addendum or even an exclusive module.