Pretty much any build is good enough for base overland content quests and delves. The skills advisor is ok and guides you into the right general skills, attributes and armour for your choices but I think you'll find over time that you ignore it more and more as you see what you use and how you personally want to play - for example whether you prefer to be up close or not, whether you prefer pets or not and so on.
The base story content is not challenging in terms of character abilities, damage per second etc. It may well feel it as a new player but it's never remotely near the point you need a character optimized for the game mechanics.
As you get closer to level 50 you get free scrolls to do a complete respec so you can then decide where you want to take it.