I have holy pact on myself for Daimon/Death farming, but there's little point on having it again on my sorcerer pawn. Buffing is really a job for mages anyway. The only reason I have it on myself is on the off chance that I'll either be with a mage that doesn't have it, or that they will be eaten during those boss battles when I need the buffs.
PSN 1: Nicodimus222, Dragon's Dogma DA pawn: Mina (mage) PSN 2: Nicodimus, Dragon's Dogma DA pawn: Tyrion (sorcerer)
For a pawn what is optimal if it's going to always be sorcy?
Mage 1-10 and 11 onwards sorcy?
Or do I need to put in some ranger for stamina and ass for strength?
Sorcerers are surprisingly good at not running out of stamina even if they leveled as nothing else. And good luck leveling your pawn as an Assassin.
As far as the "best" sorcerer build is concerned, it varies. Some like running them as more offensive mages. I like the tactical nuke sorcerers, it's what I have on my own pawn. I run High Bolide, Maelstrom, Gicel, Fulmination, Miasma. (also works well for mirrored spell approaches)
Augments, Articulacy is the big one.
Inclinations, I vastly prefer Utilitarian/Challenger/Mitigator to anything else. Works very well, pawn opts for the big spells often.