i looked at the diary. it's still fairly early. autos are tough to guage, because they have different vege periods and no way to know or predict which is a smaller or larger plant until its kinda late in process.
i'd say shoot for 6-8 vertical colas, then let it go vertically. you may even find you want to prone off some axial bud (forms a future limb) in congested areas. LST usually provides more growth nodes than you will want. cut off any growing downward toward dirt. it it has to loop around a limb to go vertically, it's always going to be slower than others limbs that don't. you'll have extra.
all you are doing is manipulating apical dominance. the highest altitude growth node will take the most resources.
so you lst to create a level base that allows for more even growth - these things are permanent till harvest. as you let them grow vertically, temporary LST can break apical dominance of any shoot growing taller than the others... let them catch up and release it. rinse and repeat until remnants of vege growth ends.
those 6-8 vertical shoots you choose to keep will fill in well. again, experience is needed to know how to space things out. take soem notes, by systematic, adjust strategy next time.