I am pretty new to Maple Royals, but my first class I made was a Thief. Second was a Cleric. Simply because I remember back in the day Clerics where very much needed and Thiefs where my favorite. But I'm not super used to the way the Royal server works. I'm level 88 now and my Thief and Cleric are on the same account (which I am being told is the wrong thing to do). Thief's base dex is at 120 now for gear and I'm also told that is wrong... I'm so confused...
You're not necessarily doing it wrong, it's just that you could have saved some money by investing in equips that give Dex rather than using your AP into Dex because eventually, you'll want to use AP Resets to reset out all that Dex. As for having both a Cleric and Thief on the same amount, it's not a bad thing that'll stop you from playing, it's just that it's better to have a seperate account with a cleric so you can use that account and multi client with Holy Symbol for training.