Grinding 5-6 toons up to 30 to get each piece seems a little redundant, and boring. We think you have to grind the same class over and over too if im not mistaken.
You do not have to grind the same class over and over you can get a Daevonian Light to convert the pieces into whatever you need depending on what your putting it on so if you have Cloth and need Plate you would do it this way.
You only need to grind 5 don't know where your getting 6 from 5 peices of armor. Weapons you get wearing all 5 peices. If you going for a twink why not and yes its worth it to have the full set if you upgrade it that set some say can take you all the way to 50, others say 43, but for sure it is good until 40. Weapons not so much there is better crafted ones at 33.
If you are going to do it leveling aion kinah sins, and glads go faster then say cleric, SM wasn't bad neithor was Chanter, but Cleric OMFG bleeding eyes. Overall the Dev set is for some people and not for others we did it and it's worth it, and yes it is a great starter set for your twink.
Thank you for your attention. I sincerely hope it will help you some. We can always aion gold service with fast delivery that brings you more satisfactorily. And our customer service is 24/7, so you can place an order at any time.