Mainly indica are best for making the largest area by doing multiple topping..
But you can do it with satvias.
So, here's how. As its a staiva it's grow long. So you need to lst out as close to the ground.. but start getting rid of those leafs.... all the energy is been used to grow big ass leafs. Where as if they are gone. The energy goes onto the node and makes for a much quicker growth of the mode in length
. So take all major fan leafs that are up and down each down..(leaving the top 2 on each node to draw in energy) and LST the nodes. Once you have a good size you can top after the 3rd set of stems on the main stem or you top after the 2nd set. Making them nodes split into 2 and you LST them out to fill your space. Your looking at a long veg. But take the fan leafs and it'll but the energy into growing out the nodes
And top the bottom.2 or whatever you need to do to fill out or..as its a satvia it'll want to grow straight. But with good LST and controlling the node growth. You should me okay. Just try not let and unwanted stretching happen.
Good luck