Should I do everything on one character?

[Marowit]

To get Monk as a job, you'll have to level Lancer to at least 15. Also, since Dragoon can pull from Pugilist skills, it makes more sense to do the two jobs on the same character.

Additionally, some of the same gear can be used for both Lancer and Pugilist, especially accessories.

How bad is the grinding get lancer to 30 and i forget to 15 for a dragoon since I'm using up all of my quests leveling the pugalists and then i assume the monk? I'm actually a person that hates pointless grinding. I'd rather do the same line of questing with some instances thrown in instead of running around from fate to fate especially because so far on Sargatanas the ones Ive done have been primarily done by me with maybe another person or two