Admittedly, if you want to maximize the benefit of armor that grants bonus damage vs monster families, you're guna need a variety of weapon types (Swords, guns, and bombs), you're guna have to switch between the weapon types often, and you're guna have to rely on them for damage (I.e. you aren't trying to kill people with the Electron Vortex, just control them. Thus a damage bonus on the vortex will be near uselesS). I don't see that being at all practical with just two weapon slots (and no trinkets). In addition, the armor sets with specific damage bonuses against monster types are meant to be... well... specialized for said monster type (Theoretically at least... cough cough Chroma cough...). You're trying to be slightly specialized at everything, but in the end you're spending far more effort to be mediocre at everything. For example, a Chaos Cowl will outdo your entire armor set, in addition to the CTR bonus that synergies well with your Electron Vortex.

Personally, my favorite armor set that covers all damage types is Divine Veil + Skolver Coat. Even then, I don't feel like it mitigates enough damage to make it worthwhile. If you're going for optimization, I'd say go for one weapon type, and get armor/trinkets that give you bonuses for just that weapon type (The exceptions are the Chaos Set and the new Black Kat Cowl).

If you're going for an all round set, Levi will outdo the CIV.

The thing about your set is that you get resistance to curse and poison (Double Max! Poison and Max! Curse), neither of which are considered essential resistances or especially dangerous (unless you're facing Zeddy in his APSet with his Venom Veiler and Triglav, in which case...). You also get two family bonuses for all weapons; logically speaking, it's a family bonus for each weapon type, so all in all, it could be considered as six Med family damage UVs (three of each family, corresponding to each weapon type).

In comparison, the Divine/Skolver set gives Max! Curse, Max! Fire, Max! Shock, and Max! Freeze, as well as a Med family damage against Fiends (split up, that counts for three separate UVs, one on each weapon type) and a Med damage bonus for swords (which counts as six separate family bonuses on swords). Given the fact that Freeze, Fire and Shock are generally considered more annoying than Poison, and that sword-users are in the majority of players, it's fairly obvious why people consider Divine/Skolver to be superior to Valkyrie/Dragon.

I have absolutely no objection to armour without normal defence, but the thing is that you're not getting the most out of your money. All the recipes involved are readily available in Hall of Heroes. Unless you've some objection to using equipment that starts from 2* as opposed to 3*, I'm not sure I see your objection to the loadout... unless you're a hipster.

I would also add that the Electron series recipes are liable to be a pain in the posterior, since they require excessive LD grinding in order to get them, and that you may well be better off going for two different specialised damage-type weapons. But then, that would just be my opinion, and you would reasonably be able to get by with a Leviathan or CIV for many parts of the game.

@ Bella
I like your idea of a good all-round loadout.

Though, in your threat levels for monsters, I'd put a Kat at 4/10 and a zombie at 2/10. Why 4/10 for kat? When they swarm, they're a lot more deadly than monsters, though it's reduced to a 1 by SMB or VV.
Now, for an individual Kat, I'd say it's definitely a 2. In a swarm, the only zombie that's remotely dangerous is the carnavon because of its curse breath.

@OP Anyhoo, on topic, I'd say that having a general purpose armor set is a good starting point, but it definitely shouldn't be an endpoint. If you get a general purpose set, your first priority should be to specialize. Normally, it's not terribly hard to acquire one or both weapon slots each month (just on mist, it's about 2.5 days in FSC if you don't want to buy CE to continue the grind) and having those makes it easier to specialize.

If you do go general purpose on two weapon slots, then make sure to have two weapons of different damage types to cover all of your bases. All normal damage weapons are below-average at everything while two special-damage weapons makes you more effective against four types and average to two.

Overall, the Divine + Skolver seems to be the best General Purpose set to me, so I'd go ahead and recommend that as others already have.

Boop. Here is what I have to say. Pure protection is never as good as split protection. Plate Sets might seem tempting but it's more for T1 or T2 because T3 Normal may be everywhere, but so is everything else.

Normal protection is essential, but so are protection from the other damage types... well not piercing... piercing monsters are kinda a joke compared to other monsters.