Good luck, I found chapters 1 and 2 extra tough with a Wizard compared to my current Melee Cavalier
I wish I was playing a Wizard instead of trying make these fucking late bloomer arcanists and 9 tailed weebs work.
Personally, I measure my arcane casters by their ability to be useful or, rather, satisfying through the whole game. Meaning that I look for sustainability and potential to shine as crowd controllers (which is where the arcane spellbooks really shine, but buffs are great too). This adds up to a ranking of Wizard into AT > Witch > Wizard > Sorcerer >>>>>>>>>>>>>>>>>>>>> Arcanist. AT is a meme, but it's a reliable meme that serves as both CC and a more than reliable blaster. Witches are great, they get to play at 'being a caster with infinite spellcasting' from the very beginning and a good choice of Patron can more than make up for their spellbook. Wizards beat Sorcerers, imo, due metamagic and faster spell progression. Sorcerers, however, do have a niche in super charging narrow schools of magic (say, you can combine Fey and Arcane Bloodlines to eventually get +4 to all offensive enchantment spells. Plus Expanded Arsenal seems to work with Arcane's school power). And Arcanist is the very worst of all possible worlds. Bad spell progression, meh class features, no extra feats. Being an Arcanist is the maximum of using spontaneous casting as a crutch.