"I had a inspector tell me that GFCI's were only listed to protect 3 to 5 outlets down stream depending on the make of the GFCI."
I'd ask the inspector to show this limitation to you.
The quantity of receptacles is incidental to a circuit's loading. Additionally, even 15-amp GFCI receptacles are rated for 20-amps feed-through.
[This message has been edited by Larry Fine (edited 01-31-2006).]