We have never had 100 carriers.
Where di you get this number?
Most of the aircraft that were scheduled to take control of the skies were to come from Okinawa gound bases.
NOBODY was going to invade Japan after Okinawa, nor did anybody need to. Okinawa put American heavy bombers within 300 miles of Japan instead of the 1400 from the Mariannas; that would have had the effect of tripling or quadrupling the numbers of those B29s, had there been any remaining real targets for B29s.
I mean, try looking at Japan on Google Earth and come back to me with how many fields of grain you can find. Japan was totally dependent on the sea and its access to the sea had been cut off and all of their large ships destroyed. If they'd really wanted to go on fighting after September 45 it would have been little fishing boats versus bearcats. Who do you really think would win a bearcat vs fishing boat fight??