ActuallyThat's not really an issue. It's not as daunting as it sounds on paper-- it's more like sitting in the middle of the theater as opposed to the front row.
10' from a 12' wide screen
is .83 screen widths viewing distance
and very close to the front row. 62º viewing angle
10' from an 8'-6" wide screen (120" diagonal)
is ~1.2 screen widths viewing distance
is right in the middle (45º viewing angle)
...Keep in mind that's based on a scope image 2.39:1
Full screen 16:9 content would be extremely taxing on your vision
What's the throw distance and what screen material/gain?
I cant imagine where you would have room for a center channel speaker if its not an AT screen.
If using an acoustically transparent screen at that size/distance that may explain it.
The larger you make the image, the larger the pixels get and sitting closer than "normal"
amplifies your ability to see things you would not at a typical viewing distance.