None actually. I played a melee fighter focused build a few updates back and wanted to play again with a build focused on juicing enemies just to see how it plays, but it looks kinda hard and i'm not that good at the game. Still curious hot it is, don't want to grab nympho tho
So basically you're a pure human race. I'd like to suggest to rebirth first into another race (I recommend Abomination race) by having Lona give birth. You can look at the LonaRPG wiki for details on rebirth. (PS: If the base game is too challenging, you can always cheat through mods to get all items, trait points and race directly)
As for my personal ideal way of playing a Succubus build at endgame lvl 99 (for now, since I'm still testing other possible Succubus builds), going by the base game's rules, I go full Physical Succubus by selecting "Nymphomaniac" and "Bloodlust" traits + all other needed traits like Prostitute, Whore of Babylon, Semen Demon, Juicing, Masochist, Omnivore and Bloody Mess (10 CON, all other points into COM up to 80 at max level 99), the reason why I go full COM instead of CON is because the "Bloodlust" trait enable your sex damage to scale off COM, the advantage is that you can do both good physical damage and sex damage at the cost of lower STA and carry capacity, but that's partly resolved by assigning just 10 points to CON, you'll still have more than enough space to transport Bombs and all other needs with you. Just a Sickle as a weapon to damage ennemies that can't be juiced is enough, heck it's a tool made to farm plants and yet it performs better than the sword because of its high speed attack. Go with a Wooden Shield to massively reduce incoming damage, switch to Idol of the Believer to stun ennemies and then juice them and possibly make them fight each other.
I used to say that not selecting "Nymphomaniac" trait is the better Succubus build but actually after multiple testing I realized that selecting a personality gives Lona a huge amount of DEF (with the Timid personality having the highest DEF), which is sort of important, not going with any personality will make her pretty squishy. Furthermore, the "Nymphomaniac" trait LARGELY decreases any negative effects on STA, which is also pretty important, especially for Abomination race with its Sickly state and self debuff. So yeah, I would actually recommend selecting "Nymphomaniac" trait, at least for this particular build I mentioned above.