This campaign will go to lvl 20. For role play reasons I'm multiclassing into a cleric of Sarenrae. My DM said I could be a cleric of the domains of light,life, peace, and he also ok-ed the beauty domain. I was not planning on multiclassing and this is my first character so though I have some ideas I am unsure of what the best build I can make from this point onward.

Here is what I have so far:

Race: Tiefling

Stats : DEX 17, WIS 13, STR 15, CON 11, INT 12, CHA 17

Feats:Sulker,Martial Adept(Ambushed, precision attack), magic initiate (booming blade, posion spray ,find familiar)

My current idea is to do 2 lvl beauty cleric, 17lvl in assassin, and 1 lvl Favored Soul Revisited (UA) sorcerer or 1lvl fighter. I am not very confident though so any advice on how to optimize this character is appreciated.

Beauty Cleric:

Beauty Domain Spells Cleric Level Spells 1st Charm Person, Heroism 3rd Enthrall, Suggestion 5th Beacon of Hope, Hypnotic Pattern 7th Charm Monster, Compulsion 9th Dominate Person, Hold Monster

Beauty's Refuge Starting at 1st level, your mere presence is enough to inspire hope and determination in others. When you complete a short or long rest, up to 12 allies of your choice gain temporary hit points equal to your Charisma modifier (minimum 1).

Rebuke the Defiler As a reaction when a creature you can see within 30 feet of you inflicts damage, you force that creature to make a Wisdom save. On a failed saving throw, it takes psychic damage equal to the damage dealt. On a successful save, it takes half that damage. Once you use this feature, you can't use it again until you complete a short or long rest.

Channel Divinity: Beauty's Truce As an action, you force all creatures within 100 feet of you to make Charisma saving throws. Each creature that fails this save is charmed by every other creature that also failed the saving throw. This benefit lasts for one hour. While charmed by this ability, creatures consider all other creatures charmed by it to be their allies. They fight to defend them from attackers. While this ability persists, absent any threat, creatures charmed by it will rest, talk among themselves, share stories of their lives, create a communal feast using food and drink they carry, and generally act as if they are old friends, long separated and brought together again for a joyous reunion.

Superior Refuge Starting at 6th level, the temporary hit points granted by your Beauty's Refuge ability increase to 5 + your Charisma modifier (minimum 1).

Potent Cantrip Starting at 8th level, you add your Wisdom modifier to the damage you deal with any cleric cantrip.

Soul of Beauty As a reaction, you can impose a penalty on a creature's attacks against you or on its saving throws against your spells and abilities. This benefit lasts until the end of the current turn The penalty equals your Charisma modifier (minimum 1).