Looks like you got your starting build worked out, however with the resetter being free until level 40 you might wanna just get 12-15 dex and max str until level 40, that will allow you to grind those early level faster. Then reset to whichever stats you meant to have at 40.
Do the letter delivery quest, it helps a bit, it starts in Prontera with the save girl ^_^
As for knight, never played one so might wanna just ask the ones on forum or even in game when you see one that looks like they know what they're doing. Good luck!
