First grow is a perfect time to LST! No point in waiting till a later grow that’s silly!
https://www.growweedeasy.com/lbhs-famous-4-way-lst-tutorial-plus-topping-sub-tutorial
Check out the tutorial. I would top and LST if I were you.
Since it's your first grow I would let some do their thing and I would do some lst on a few. That's a lot of plants for that area. Dont let them veg to long or you'll have trouble getting light to the lower parts of the plants. Cheers