Since you have already picked the klipsch speakers - I would recommend switching out the L&R mains for the WF-35. I think you will be disappointed in the W-14 as mains since they are smaller than your center. You could always hold onto them if you decide to add front wides or heights when you get the upgrade bug some day.
You'll also want to add some light blocking to the windows and may want to paint the walls/ceiling around the screen area a darker color to reduce light reflection.
My set up
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