Depends on how much you want to see vs. looking outside I guess. It’s adequate, but hardly what most folks are used to these days. I have a single screen (different manufacturer) about that size in my little jet, but also have an engine panel separately. I also use an iPad mini as a map on my leg in that plane.
for IFR, I’d not be comfortable with a single 7” screen…. Unless I had a full steam gauge panel as well!