I wouldn´t recommend a hybrid build except if you want to use the following: Rose of Ariandel, Morne´s Greathammer, Earth Seeker, Wolnir´s Holy Sword, Dragonslayer Greataxe/Sword Spear/Spear. Those all scale with Str/Fth and are uninfusable.

Depending on whether you want to do HUGE damage with the miracles and use your weapon as a backup or the opposite you have the choice between pure Faith and a hybrid.

I´d say rebirth your Strength build into this as long as it isn´t a Warrior with abysmally low Attunement:

Go 60 Faith with minimal investment in Str/Dex for weapons you´d like to use (like Dragonslayer´s Axe or something), get yourself the Saint´s Talisman +10 (A lot better for offensive casting even though Yorshka´s is better, because you can poisecast with it), your weapon of choice (must be infusable or buffable, mine is the Sunlight Straight Sword with LB), either infuse it with lightning/blessed or raw and buff it, get the Ring of the Sun´s Firstborn and Morne´s Ring.

With this setup I hit about 1100 dmg with a point blank Sunlight Spear and 800 with Lightning Stake. Sunlight Spear is only worth using when the opponent starts attacking and you poisecast before it. Hits. Every. Goddamn. Time. Especially straight sword spammers. Lightning Stake is just for the mixup. Sometimes people will roll towards you because they confuse it with the Sunlight Spear on reaction sometimes and will likely get the full damage.

As for spells I´d say Lightning Stake and Sunlight Spear is enough, but you can go the extra mile with your Attunement and add Lightning Arrow (VERY good finisher), Lightning Blade (if you buff) and Lightning Storm. You can also replace Lightning Blade with any healing miracle and combo into it with Lightning Storm. Let´s you pull that of safely.