Thank you all for your input. I don't mind using potions. I just don't like casting spells.
To Bret: I completed the tutorial section with only three party members ( I deleted the fourth character) on normal difficulty. The three were soldier, rogue, and a priest. I would like to get rid of the soldier and the priest so I can solo as a rogue. Not just any rogue but a highly skilled assassin. I'm thinking of ... Artemis Entreri, with the heart of a 'do-gooder'. This also means that I won't be using two-handed sword nor pole-arm weapons.
Since you did warn me that not all side quests can be completed without magic, what I will do is use the editor to assign minimal spellcasting abilities to deal with magic barriers and magical locks.