If you dont want to over-level that much then stop doing the roulettes. You clearly dont need the exp. And if the goal was primarily poetics tomes then theres another way to get those that will give you less surplus exp. Each time you run a duty for the first time(or help someone else with a first time clear) you get a chunk of bonus poetics tomes plus whatever the duty normally pays out. There are a ton of optional trials dungeons and raids available at level 50. Focus on your quests so you can advance into Ishgard, and when you need a break que up to run a first time dungeon. Or check the party finder either for groups trying to do the content on your "To Clear" list, or for people with a first time bonus of their own who you can help to get paid. Hell, put up your own PF group for some of the harder ones and people might find it and join to help you(and get paid). The big 100 quest block is a lot, but it looks like a lot more then it actually is before you do it. Looking back, i see a slow start and an increasingly fast finish. Before hand? I was dreading the whole experience.