First two builds are good tho third in my opinion is pretty bad. =) I don't see a reason why cent would need agi.
You can put points on int if you want to wear holy later on. Tho i prefer to go all sta - more hp better for me. And i think it's also better for non-reborn anyways. When you reb and wan't to try some harder fights, like vival r21, you can always restart your build and get some holy if ya need. For now just add some gems on regular armor with guild res to get physical/chaos/etc. res and you will be fine.
You can delete chars by going to Grimreaper at Sky Passage. To set your skill hotkeys open your skill menu, select one skill and press F1, F2, etc.
