I'd choose Snarby Fire max cause shadow & elemental & piercing uv's don't really do much. I'd also choose Coa elemental max

Learn to use Swiftstrike Buckler.

You will love it.

You will never touch any other shield again.

Swiftstrike >GoS/CoA

Snaby stops way more shadow damage from zombies than max shadow vog cub set; you take 4 - 3 bars with snarby, 7 - 8 with vog cub. Elemental threat in FSC is minimal (lava tiles, fire puppy, vanaduke fireballs and mask phase bullets), one you have enough experience doing fsc you wont need elemental defence, then using snarby is nice because of zombie's jump, or a teammate push them towards you, etc; also having damage bonus very high is very desirable. Vog cub is cheaper, while snarby you have to get 2 max fire uvs (+11k ce / each wolver piece) and craft them at the Sanctuary, if you can afford that, go for it.

As for the shields, depends on what is your biggest problem, lava or zombies. Crest of Almire can take more zombie hits than Owlite, but would break faster with lava or mask bullets; Versus Vanaduke's mace and Trojans sword, both shields do similiar. Once you have played FSC enough, you should try using Switftstrike or Barbarous Thorn Shield.

Vog Shadow Max! would be better than snarby Fire Max! in FSC ignoring the sword bonuses (assuming you run opposite trinkets or something).

reasons:
1) Most sources of fire also do elemental damage. So, while snarby would prevent a long burn, you'll take more damage overall with no elemental resistance.
2) Double Max Shadow should put shadow protection at a similar level as a single piece of snarby. Decent protection, and what I currently run with.
3) Vana fight deals a lot more elemental damage than shadow damage (fire orbs and shadow fire, vs 8 zombies)

For shields, flip a coin. I think you're best off buying both and not worrying about the UVs on them. Take whichever one defends against your bigger problem (zombies vs fire traps). Personally I think CoA is better since you shouldn't be walking into stationary traps. As for use outside of Vana, having both is more important than having one with a UV, since devilites and howlitzers don't mix with elemental dealing monsters that often.

O u got lag.

I guess Swiftstrike isnt good then

If zombies aren't a problem, but the fire traps are, then Vog fire max and vog shadow max are my advice. Also, GOS normal and elemental max would be my suggestion.

could be wrong... but I pointed it out anyway. I read somewhere people analysis the status effect resistance capped at 10 points. (too lazy to dig up old posts) It will stay at 10 points resistance even if you have more. 8 points is a mark where you are immune to minor status. There is no immune against moderate and strong status effect.
low = 1, med = 2, high = 3, very high = 4, ultra = 5, max = 6, a piece of armor with full status resistance (ex: vog) = 5
So having like 1 fire max and 2 vog set = 6 + 5 + 5 = 16 which is too much ;x

I'm pretty sure it's two Vog (Or any 'max' fire pieces) + Med Derpules.

Well, he did informed you everything you need to know about the 2 different sets. However, you can also combine them or mixed them!

Like me, I have Snarbolax Cap with max Fire and a Vog Cub coat with Normal max and i think i have pretty good defense on it. But if you really want to go for a set, i suggest you go to Snarbolax as it has more defense against zombies. =)