Era 300 placement with room obstacle.

Greetings i recently bought 2 era 300 to place them as surrounds, replacing my old one Sl's.

The room is wide but there is an obstacle a pillar in left side of the room. 

I tried to draw the room.

is placing the era behind the pillar on the marked yellow spot will reduce it's effect.

And changing angel of it will help or it is a complete dead spot.

any other options of mounting on wall that can help ?

Thank you