Sure you can by only taking some wizzard spells.
Going gap zero to 100 is fastest with a zero gap, but you will be far away from your skills. In fact going gap zero till 100 and start farming at mobs 100 when you are 100 will ask much more time than gathering sp during the levelling up.
It's a choice, players level zero gap because they want the first sosun drops for a lot of gold in game, or you choice for a nice balanced build that isn't killed too often because the skills are far too low.
A zero gapper hits level 100 the fastest but his sp grinding will take ages.
