I believe you're off on your receptacle calc. It should be 4.5 shouldn't
it? Either way, it's a bit irrelevant since his current boxes are not near
the 17 in needed.

Greetings,

Important: My original total, 18 in^3, is correct. 17 in^3 is too
small.
Yes, the 5.5 is a typo and should be 4.5.

Sorry for any confusion,
William