Don't be like me. Just about done with my first book, only have the "easy" leves left.
Some are GC leves, and I'm w/e min rank you get through the main story. I have to complete the hunting log, run a dungeon (or two?) and then grind seals for enough promotions to Chief Sergeant...
I will say this, SE expertly executed a plan to recycle what they already had with these quests. With nothing "new" really added for the quests, they've added hours on hours of additional gameplay, forcing you to do stuff you may have skipped.