How high do you think I am here (rim is 9'8 ):

I would say that since you're highest reach is 2.41m

and the rim is 9'8 and the square behind the rim of a regular backboard is smaller than regular 16 inches but your hand is not high as the top of the mark so minus around 4 inches so that is 12 inches above hoop.

the rim is 9'8 which is 294cm + 30cm = 324cm

reach is 241cm

so your vert would be approximately around:

83cm, which is 32.7 inches rounding up to 33"

**33 Inches**So your vert is between 30 - 34 inches