Spirit Patron abilities are governed by Essence Channeling, which is the problem with getting Primal abilities through patrons.

Just have Inspired remain a prerequisite, make Inspired characters choose between Miracles and Primal abilites, and limit Primal Inspired to powers directly related to their deity's sphere of influence (I usually limit them to 2 categories from which they can buy powers). Then leave the costs for the powers and the Primal Skill as standard.
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Jason Vey
The Grey Elf
http://www.grey-elf.com/
What are you waiting for?? Go Buy Dungeons and Zombies!!!
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If everyone knows the supernatural is real, than any psycho with a grudge can summon up Azathoth and destroy Oklahoma.--Nyarlathotep, BtVS RPG posting forum