If you're up for soloing you can do what I did, it worked pretty well especially with the way Grounds Tome books have themselves on loop.
I hit up Garlaige Citadel (sp?) for a while until 60, page that asks you to kill beetles and bats, then I went to Crawlers Nest from 60-67 and did the page for hornflys and exorays.
At 68 I went to Abyssea soooo I don't know where you can go to solo after that. Crawlers Nest typically has a sync party for crawlers and bees going on in there that will blind invite you if you're willing.