Sneak Peek -- You can't wait. You can download the new version of DM's Familiar as soon as the project funds with the Spells portion of the Library already working. You'll get a new version of DMF to download each time a new feature is added to the Library, and you'll get a year's access to the Library.
Newbie -- You want to fund the library AND purchase a copy of DM's Familiar. Download DMF now and start using it with the 30 day free trial. Once the project funds, you'll get an unlock key for DM's Familiar and you'll get to use the Library for a year.