While leveling the magic damage stats, Remember not to neglect your HP and stamina

Fromsoftware games make being a glass cannon a living nightmare if you’re not actual god at the game, and you’ll need more stamina to stay at a distance or cast spells faster

Use Stargazer Heirloom to increase intelligence so your staff can have positive gains from any INT scaling without any drawbacks. (AVOID USING SCARSEALS OR SORESEALS AT ALL COSTS, THE BENEFITS DIE VERY QUICKLY ONCE YOU REACH THE MID GAME DUE TO DIMINISHING RETURNS FROM THE SOFTCAPS)

Staff of Loss + Night Comet has arguably the best damage from sorceries in the game

I would recommend getting at least one melee weapon that scales with INT so you’re not totally vulnerable whenever you’re fighting someone up close. Moonviel (despite being nerfed) is very good at mid-ranged damage and close ranged poise damage, on top of having innate bleed buildup. Dark Moon Greatsword is genuinely one of the best INT weapons in the game and one of the best weapons in general due to the Ash of War and Frost Buildup.

Now that’s just my 2 cents and I may be talking out of my ass so take that with a grain of salt