The only gear gods have listed in their possessions line in the 3.5e Deities and Demigods is zero or one iconic items, often a weapon but sometimes something else (like the crown of Thoth) that is either an artifact or a real powerful mash-up item. The rest of gear doesn't matter, and you'll note stat lines are pretty full of "+12 divine" or whatnot instead of real gear. Some do have +5 armor of whatever sort seems appropriate (Heironeous, Hextor), but it kinda seems like color because they also have "+28 natural, +15 divine" which means "the writer made it up."
So don't worry about gear for your god except for some specific thing they are known for. In this case probably the warhammer, which would have whatever stuff you want to throw on it. Like Thor's Mjolnir is a "+5 chaotic distance ghost touch holy mighty cleaving returning thundering warhammer." Thor's a rare example of a deity with some other possessions, but they're not "+3 whatever" they're "a chariot he can fold up and put in his pocket." Or, if you want to stress his defender aspect, either the armor or the shield - like Yondalla's more signature item is a super snazzy buckler (and a random +5 sword with just 3 specials on it).
So ideally one thing, which should have a name, and be iconic, and tempt characters to use it in curses. "By Moradin's Hairy Mattock!!!"
Don't bother. They did away with deity stats entirely. They can appear in many forms. Instead they have stats for powerful servitors - see Inner Sea Gods for examples.
James Jacobs writes on the subject of deity stats:
1) NASCENT DEITIES: We have things like nascent demon lords (like Treerazer) who can grant spells but are only CR 21 to CR 25. These guys are meant to fill the role of "let's kill an evil god as a capstone for this 1st to 20th level campaign" basically.
2) DEMIGODS: These guys are what mortals can (in theory) fight and defeat if the mortals are powerful and lucky enough. Demigods include things like demon lords, the Horsemen of the Apocalypse, and some regional deities like Achaekek (the mantis god) or Besmara (the pirate goddess). Whatever "CR" demigods end up at will occupy about the same niche as nascent deities do right now—+1 to +5 over whatever that ultimate, final level cap ends up being.
3) DEITIES: These are NOT things mortals can fight. They can oppose them, and given the right combination of legendary feats, they can even be defeated, but they won't ever have stat blocks. At least, not unless we decide to do a "Deity level ruleset" or something like that, but even then... I'm not keen on letting actual combat stats out for deities. The game would probably have to be completely different to accommodate that type of play experience.
Now that the Mythic rules are out you can see some examples of this second class in e.g. Mythic Realms (like The Whispering Tyrant, CR26/MR10 human mythic lich necromancer 20). They do have a full suite of gear.