Royal Bodyguard Type S

This... doesn't seem like a good idea, really. You'd be spending a crap load of time just leveling up enough and spending so much money on equips to POSSIBLY get enough accuracy to hit it enough just on a whim of whether or not it'll be good training. I'm sure there's better ways to leveling up via boss grinding, like Zakum Arm solos, if you can manage to find people who would help you get into Zakum every day.

Good luck to you, if you do go through with this.