Before you flash make sure you're running latest TWRP recovery which supports F2FS file system. Eg. this one [RECOVERY] TWRP 220.127.116.11 recovery for u8800pro/u8860. And format the /cache and /data to f2fs, then flash the ROM. Unfortunately there is no enough space for the GAPPS, but if you manage to flash them, post message.
And say thanks to @desalesouche !