If you want, I went all int and attunement for a specific PVP build at low level, but if you feel like putting points in there, go for it. Alternatively you can kill Lautrec early on and get the Ring of Favor and Protection, which will boost your health and stamina for free, but if you remove the ring it breaks.
The key thing as a sorcerer is that you shouldn't be getting hit ever. You will be limited to light armor and have a fast roll, and casting spells doesn't use stamina, so it's always there to use if you wanna get out of a sticky situation.
There are some items that will boost sorceries that are definitely worth getting, too. There is a sorcerer you can free from the Lower Undead Burg who will sell you the Bellowing Dragoncrest Ring, and there's a hat called the Crown of Dusk that you get after finishing a side-quest of sorts. I'd just look it up because it's pretty obtuse, and you can get it before you ring the first bell.