LST is no hassle, and a good way of learning the feel of the plants. I agree that SOG and scrog are too much hassle the first time around, especially if you're growing from seed and even more especially if you're groing different strains, because those techniques prefer plants of a similiar size (e.g. clones)

Go for LST with different strains if you want, and take clones from the ones that are best in veg.
Keep them alive until you can see which ones do best in flowering.