Question about growing autos indoors

Hey Everyone.

I'm on week 3 of flowering for 3 other non-auto plants (Wonder Woman, G13 Haze and Pineapple chunk)...once they are complete, I am looking into growing an auto for the first time. I actually didn't want auto, but I wanted a specific strain and well, I decided to visit a seed bank in person. Unfortunately, the only kind they had of this particular strain (Black Domina) was auto. I was like..oh alright..whatever, I'll take it, just because I heard some great things about the bud.

I forgot what auto meant, but now, from some research, I understand them to just flower automatically when they are sexually mature. Ok, that's cool. I hear mixed reviews about the potency, but I still want to grow it.

Am I ok at putting this auto under 12/12 for the whole time or should I just do more daylight to veg it faster? Do I do this under MH first and then when I see signs of flowering, I switch to HPS or should I just use HPS for the entire duration? When do auto flowers usually start flowering? I am not sure because I hear as early as the fourth week or even third...

thanks.