A list of the leves you want is here:
http://ffxiv.gamerescape.com/wiki/Benevolence
http://ffxiv.gamerescape.com/wiki/Piety_(Guildleve)

You'll get about double the exp listed for them if you can hit the top mark of 160/320, you have 4/8 nodes of 6 swings each

Items your level give 7 points, level+1 give 8, level+2 or higher give 9

Select your level +1 or +2 for the first 4 levels and go for the easy item, with current gear you should be able to get the top exp 99% of the time without waiting on GP or using potions. The last level where you can't select it higher than your own, you can go down a level and try for the harder item

All you need is gathering and GP gear, you can skip head/belt/feet, and don't need to upgrade accessories very often