What to do next?

I started 6 plants total and def knew it was overkill for a 4x2 grow tent. Out of the 6, i now am down to 2. 3 maled up on me and one is a pointless deskplant for commical purposes. So im left with what now? Ive never topped or mainlined b4. Is it to l8? The girls are about a foot in height and 5 weeks old. Help a newbie flourish! Thanx all!

Not too late.
Since it's your first go, I'd say either leave them be, or top...once

Have fun

Kinda where my thinking was also. I might just top the plant like you said one time because my concern is keeping them inside this small of a tent. My dimensions are four feet in height and two feet squared in length and width my lights... I'm running a Mars Hydro 600w panel and I'm already hugging the top of my little 4 foot tent with only a little more than two feet of room above the canopy so I don't know if I should do some training to keep the plants low like super cropping or if I should just top the plants and super crop the new branches

Sucks that you're so limited by space.
If you decide to super crop, use something broad and blunt to crush the stem, not something skinny like a screwdriver shaft.

What strain is it? Some will stretch way more then the others. I like to top above the second node which leaves 4 main branches and makes the pants kind of symmetrical and easy to work with.

I mainlined when my plant was significantly larger. Only thing is you waste the time and energy the plant has used to grow anything you’re not keeping. That’s it really.

It was my first grow, mainlining worked out absolutely fine, just a shame I couldn’t shake the deficiency issue with my plant!

Good luck with your grow bud!