Lothlaurien, if you considered Arcanist, I would say go for it! As LinkCourage (and my personal experience) said at level 30 you will have two jobs available, Scholar being a healer and Summoner being a DPS. All exp gained while playing a job goes to the class behind it and this is the nice thing with Arcanist: it means you will be leveling Scholar and Summoner at the same time. You can play Scholar for dungeons with very fast queue time and Summoner for questing or just DPSing if you feel like it. On top of that you will use the same stuff for both class until very late in the game (level-wise).