The picture is pretty garbled on my screen as well. Is the TV in the corner flat against a 17' wall ? If so, I have to think that angling the TV out into the room would make a huge difference.

Is the 10' opening in the opposite 17' wall from the TV ?

What kind of furniture are you trying to fit into the area ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8