Aran Ring

So 6 months to raise two Arans to 30, delete them, raise two Arans to 50, delete them, and then raise two Arans to 70 for a total of 150 levels. I think I can do that if I really try. . . . .

1-30 can be done in a day if you're not lazy. 30-50 can be done in about 2 weeks or so. 50-70, not sure since this is usually the stage where classes split more noticeably on their EXP per hour.

It isn't hard at all to do, so long as you have the patience to start over.

By the way, it'd be better do it in descending order, so you get the more powerful rings first, and so by the time you make your last Aran you're not thinking "ugh, now's the hardest part" and lose motivation.

Take out the hardest one first, that way even if you give up on the other two, you still walk away with the strongest ring.

I don't see why you can't make one to 30, transfer ring, delete/make another to 30, transfer, repeat.
Does the Bank check for one-of-a-kind? ie: Karma'd zHelms.

If the rings themselves are one of a kind, then you can't equip 2 on your main character anyway. Unless you have 2 characters you want the level 30 ring on, this method is pointless. To wear more than 1 Aran ring, you have to collect the different leveled ones.