Cart Revolution is amazing with a blacksmith / mastersmith / mech. You can use a Guillotine or some other high ATK two handed axe as blacksmith, cancel weapon penalties with it, and do awesome damage compared to the alchemist counterpart. As mastersmith, Hurricane Fury / Giant Axe is insanely powerful. Mech can use a pile bunker for even more damage with a shield too.
Healing = Witch Hat + Alarm Mask, Fish In Mouth, Snowier Cards, Rudolf, etc.
SP = Earth Deleter Card, not even needed at higher levels sometimes if opting for INT
With the above two you will never have any rest time. Also you can utilize town inn / eden kitchen for full hp / sp for very cheap, and use an acolyte warper to take you back to whatever map you were in quickly.
Cart Revolution can also be endowed. With the weapons mentioned above, you can reach 5k damage easily with average gears. Even somewhere up to 8k to 10k with Pile Bunker and some above average gears (no gods / megs or anything), and I've done all this without a Heavy Metaling Card too. With that damage I've 99-ed characters, and even grinded a couple levels over 100 since you don't always have your third class AOE that fast.
Position bugging occurs only when the monsters have an attack range of 2+ cells. Cart Revo is REALLY bad against those monsters and you must make sure you are targeting monsters with only 1 cell range. Check the irowiki DB for how many cell range each monster has.