The question, in that case, is what do you want from zero gapping?
Is it that you want to simply lvl as fast as possible?
Or do you want to lvl fast to a certain point then delvl to open a gap for sp farming?
If it's the former, then ofc you need to lvl as many of the skills you need and want but you perhaps will lack the sp to keep doing it.
If the latter, then have eg skills at 55, 0 gap to 64, then open a 9-gap for significant sp gain

g/l