I have been fighting Storm dragon and I can't beat him here are the stats, weapons, characters, and summons that I use.

Sabin
Level 29
HP 1762
MP 372

WEAPONS
DRAGON CLAWS
ANGIS SHIELD
RED CAP
POWER SASH

STATS
VIGOR 58
SPEED 41
STANIMA 46
MAGIC POWER 30
BATTLE POINTS 214
DEFENSE 175
EVADE 32
MAGIC DEFENSE 125
MBLOCK 44

RELICS
ATLAS ARMLET
BLACK BELT

SUMMON
BISMARK

Celes
LEVEL 29
HP 1396
MP 384

WEAPONS
ATMA WEAPON
ENHANCHER
CRYSTAL HELM
CRYSTAL MAIL

STATS
VIGOR 34
SPEED 34
STANIMA 33
MAGIC POWER 43
POWER POINTS 406
DEFENSE 150
EVADE 7
MAGIC DEFENSE 99
MBLOCK 29

RELICS
CZARINA RING
GENJI GLOVES

SUMMON
IFRIT

EDGAR
LEVEL 29
HP 1401
MP 375

WEAPON
GOLD LANCE
THUNDER SHIELD
REGAL CROWN
GOLD ARMOR

VIGOR 40
SPEED 32
STANIMA 37
MAGIC POWER 30
BATTLE POINTS 159
DEFENSE 176
EVADE 24
MAGIC DEFENSE 110
MBLOCK 11

RELIC
HERO RING
CURE RING

SUMMON
GOLEM

SETZER
LEVEL 28
HP 1303
MP 365

WEAPONS
MAN EATER
GOLD SHIELD
GENJI HELMET
NINJA GEAR

STATS
VIGOR 36
SPEED 34
STAMINA 32
MAGIC POWER 29
BATTLE POWER 164
DEFENSE 165
EVADE 19
MAGIC DEFENSE 119
MBLOCK 11

RELICS
RUNNING SHOES
CURE RING

SUMMON SRAPHIM

So these are all stats and details that I have so can someone tell me what problem I have or switch certain things. Thank U.