Thanks for the replies guys. I do realize Summoner would be the quickest way to level up solo, but I am really just trying to get to 50 as fast as possible. Unlocking Summoner means I gotta level a Thaumaturge to 15 (which yes, I will need Swiftcast as some point) but I will deal with that later I think.

As far as just focusing on the job, I do agree. I will be using Scholar to heal dungeons and group stuff. But for strictly solo content to 50 I would think Arcanist will be faster than Scholar since my pet as a Scholar does no damage.