I know wanting to play as a human is considered boring, but would have any idea of what kind of build humans can use?

Humans have a decent health bonus, nothing like some of the realy tough races, but OK. They also have a small bonus for collection tasks.  Nothing real to give a hint for a build. I usually choose fighter as the first class, so three points into Physical and five into Social., then maybe 1 for Wits and 1 for Sex The Sex trait is Irresistable which make the initial seduction easier and the other trait is Prodigy which helps gain classes faster This has always made the early game smoother. Of course, this basically a Fighter build, but your max health and Physical will be lower than the tougher races.  Humans don't have good boosts for Magic so a Mage build will be a little weaker to start. If you start with a free slave, choose a race and initial class to balance your MC.

Build for any race (works well with Fairy but Human will work too)

Charisma 6 Sex 6 Starting Class Healer (choices are limited)

First servant I choose generally a Dark Elf for the Druid Class but any race will work. Your MC is on front line the others on rear. Have you noted that, for the moment at least you can have a Futa Warlock Witch?

+100% mana trait and Curious sexual trait for both. Add an extra master room  to the manor and make other watch and hope they gain Curious.

After that 2 paths for the MC

Evasion Master (Thief you always need one for treasures, Rogue, Assassin) Daisy as a bard for the Increase Evasion Skill) Light Mastery because there's a skill that increases Evasion, Advanced Medium Armor with Air Crystal. Most monsters will miss you.

Lust Drain (Harlot, Succubus) Lust Drain is wonderful for free XP and Mana Drain). You need an Aphrodisiac Factory. Somebody on grain production, somebody on alcohol production, somebody permanently in Elven Capital (for flowers), and an Alchemist on Aphrodisiac Production. Hundreds of free XP every day. Every slaves in my game have these 2 classes.

I like the Apprentice, Caster, Dominator arc for Mind controller path but it's for flavor.

My first pick for MC is always +1 social skill use because it adds 1 Lust Drain use and 1 Double XP for the day use too.