if you think ur going to have not enough sp. your right probably
ive found that a consistant 3 gap seems to be ok leveling and ok sp grinding on white or a lil higher mobs but dont go too high and only kill greens when u get to nachals (67-76 in nachal rooms

)
theres a sp calculator somewhere but im nt sure where it is... what build are you so i can determine how much youd need to farm.
and what level are u