Vegging clones

I have about 30-40 clones of critical +, pineapple chunk, and liberty haze that I just transplanted from humidity dome to small pots. I am going to finish these outside but was wondering if i should veg them for a couple weeks indoors under 24 hr 600 watt MH or should i Just get them outdoors ASAP? I am trying to figure out which one will make the plants taller in the end Also what soil mix is recommended for such a short veg cycle?

i would let them go for 1 week under 16/8 or 12-1 lighting and then move them outdoors

why not veg them outside???

my only thought was i could get more height out of them being on 24/7 the weather here has been so shitty you cant count on sunshine but like 3 days a week it seems.

You can always do both and save a little on the power bill.