The average eye should be able to see pixels on a 135" (342.9 cm) screen up to around 17’7" (535.94 cm) away at 1080p. Moving to a 4K projector should allow you to move that pixel threshold distance to about 8’10" (269.24 cm) away instead. If you find that comfortable that would work for you, but I don’t like whipping my head around like I’m in the front row of a tennis match while I’m watching TV. Hehe 😉
In case you’re curious, 3’9" (114.3 cm) is the pixel threshold for the 58" (147.32 cm) 4K TV.