You must decide what char you want to play and no one else can tell you that.
Hardcore solo fast newbie guide who want to get lvl fast and do not depend on others (but cost some euros):
create 3 chars. Main + Buffer + secondary support (se,ee or bd depends on main). LVL up to 20, make 1st prof
For example PP+BD+PR
Buy 2 premium accounts
Buy 2 top D bows from shop + akat
LVL up all chars on raid bosses to lvl 60 (PP,BD can be lvled up to 58 to be decent buffers) easy with same speed as 1 char, and then you can decide what you want to do next.