This is of my parent’s balcony and on to mine (3.7m down)

I am going to make a change to everything. (box, string and parachute) I am going to make everything smaller by half like the diameter on the canopy is now 50 cm. I am making a change to the variable drop hight it is now 3.7m or 370 cm. Also what I will be using in my data table it used to be the max speed and now it is the speed right before the box hits the ground but everything else will stay the same. My constraint will stay the same.