One piece of advice; do the turn ins.

If you were leveling your Armorer, at 45 those five leves could have been worth between 15,000 to 20,000 depending on the level of the leves.

On top of that you get mats which you can usually use to squeeze out a few more exp.

If travel is an issue figure out where the leves are sending you and set your homepoints to minimize.

Instead of trying to figure out how to get more leves, try to squeeze as much potential as possible from each leve. Between chocobos, means of replenishing Anima and two homepoints turning in leves isn't that bad anymore.