Those all look like decent ideas, but:

I am not sure, how good deadly is after the nerf to jabs. It also only buffs jabs and radiant oppresion (unless you use some other dots aswell) and only benefits the frontbar with its buff. Much more used frontbar sets are mechanical acuity or orders wrath in the case of crit focussed builds. Briarheart could be an option, if you wanted another spelldamage bonus, that carries to the backbar aswell. Penetration sets like stuhns or nightmothers are the other most used sets, since penetration is the most desirable offensive stat.
Wretched vitality is not bad, but kind of useless, when you use jewels of misrule. I see wretched vitality mostly as an option, if the goal is to use tristat food like bewitched sugar skulls.
Markyn ring of majesty is decent, but does not give you the bang sea-serpent‘s coil does provide.
Magma incarnate is a bit outdated, since most builds use vigor now and therefore minor resolve is already given. And a monsterset only for a max 66% uptime of minor courage is not worth it.
Olorime is a good set, but provides same buff as sea-serpent‘s coil, so its not an option in most builds. Alternatives here are bsw and briarheart.