So about those Private rooms

[Grizzlebeard]

Will the 300,000 gil be for the FC as a whole or per member..... They never broke that down in the live letter

You must belong to a Free Company that has a house and you must be at least certain rank in your Grand Company. The cost is still being finalized, but the current plan is for it to be 300,000 gil.

I'm going off the highlighted as an indication it's a cost to each individual. Additionally so as it requires a Grand Company rank.