HELP! 7.1 Speaker Placement?

[Drew664]

This is my set up, and the red outlines are where I think the speakers should be when they are wall mounted.





The room's dimensions are going to be in approximations:
The length is 12'
The width is 10.5'
The heighth is 7.5'

Obviously living in an apartment means tight spaces, but I would like opinions on the best possible placement of these speakers.

Thanks!