Honestly, you get a solid challenge out of these games no matter how you build. Different bosses/ enemies will challenge different builds. I also enjoy the everything-bagel battle-mages. I try to stack enough mental stats to cast every spell in a game, enough strength and dex to wield whatever weapon I pick up for that run, and enough attunement to learn 3-5 spells at a time. My health, stamina, and equip-load are whatever I have left within the arbitrary level cap I set for myself (usually 201)

Anyway, my point is there’s no better / worse way to build. All that matters is what you like and what you don’t.