acoustic issues

ill o.g.
hey guys, i need a help about acoustic enviroment in my future studio.I placed a sketch in pdf format and i dont know what to do with my problematic area, should i put a bass trap as well in that corners and apsorbers.The walls next to the main door, behind and opposite the speakers are already made with appropriate materials but this part is a litlle bit tricky... any advice would be precious, thank you

And yea, some ideas for the window behind the speakers can i put apsorbers on it or something or just leave it as it is...?

studio sketch.jpg
 
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