Yes, I agree you should get the Cafrisun Armor Set and make use of Pardoner’s Sacrament 15/16/17 buffs in town.
If you didn’t want to just mindlessly grind on monsters, you could always just follow the quest line.
Zone 1, 3, and 5. are generally all you have to do.
By the end of Tenet Church 1F/2F, you should be at Rank 3, getting you Magic Missile.
By the end of Cobalt Forest, you should be at Character Lv50, allowing you entrance into the first dungeon.
Run the dungeon 3 times, and you should be Lv65~, good enough to resume questing.
You can continue using Sacrament if you wish, or simply rely on Magic Missile’s power at this point.
(Note: Based on a character with a Token active)
If you wish, you can also quest on Orsha Side (not really necessary though).
Also if you continue questing zones 7, 8, and 11; You’ll probably end up Lv83~ ish. You may have to quest at Zone 12 as well to get enough cards to push to Lv90. This will get you into the next dungeon, and soon the Lv100 Missions.
At 100, you can always do Missions, and many dungeons keep opening up (115, 130, 145). As well as the grinding spots (Demon Prison, Bee Farm).
Still with plenty of quests to get you to up there.
I believe when I made my first Wiz3, I didn’t make use of the Sacrament Buff. But Magic Missile carried me all the way to Lv100+ with ease.