IIRC you’d be near the 1.8MB range as about 200KB are used for the EEPROM emulation and LittleFS does not require (extra) wear leveling - but I’d rather leave the final word on that to Rick 
IIRC you’d be near the 1.8MB range as about 200KB are used for the EEPROM emulation and LittleFS does not require (extra) wear leveling - but I’d rather leave the final word on that to Rick