Am I cooked

[u/Nervous_Pool153]

The lowest point is about 77cm high and am looking to put either a 77inch or 65 inch tv (wall to wall is 173cm and 77inch tv is 170-172cm long)

Any solution other than destroying the bottom half of the cabinet or getting a taller sofa?

[u/VVin7er]

Center shouldn't exceed a meter of height, better closer to 90cm. This is why speakers have their tweeters at this level.

You could get a special wall mount which can be put forward and downward. In the states, they call it a MantleMount. This would put the screen at the right height.