FF III/VI CES Challenge part 1 Boss Tentacles (Goal beat game & 8 Dragons

I think this is somewhere good point start recorded this. Another challenge.
Already completed challenges (Natural magic only) & Active mode only +Terra final boss Solo challenges. Low level seems bit too hardworking yet.
Final Fantasy 3/6 CES challenge mean (Celes, Edgar, Selzer only) My goal completed all 8 Legendary dragons and beat game with 3 charcters only, thats will mean you have to run final level through SOLO. Not sure is there possible beat Magic Master (im not intented over leveled that too much to survive ultima. How ever there is no way use life 3 lot like NMC. I just pass Gem Box NMC because Magic Master take over 8 hours waiting when his magic run out. its technically pointless.
Tentacle could be bit nasty boss if you not know what you are doing. Golem, runnings shoes & ribbon help a lot. Those evey tentacles is different weakness. Only lower left could be killed used doom. I read you can sleep both upper ones, but its look i was unlucky about this.
This boss is tedious.