Recommendations regarding speaker placement

[Jutty]

My current set up is as follows,, I have energy take classic speakers in each top corner of my room, (15 x 15),
65" TV on a full motion wall mount , SVS prime center speaker just under the TV, and a SVS PB1000.
The seating position is approx 9 ft away from the screen

Over the weekend i got my hands on a pair of polk Tsi100 bookshelves for $25, and want to swap the 2 front satellites for the polks, and using the sat's for atmos .

Ive added a pic ,i apologize for the mess lol

The plan was to mount them to the wall , as like the right side of the TV shown in the pic,,, but the misses would rather them be at the corners of the room where the current satellites are, (due to us having kids running about and grabbing at things lol ),and id be moving the sats for Atmos. would that stop me getting the atmos effect( due to them all being the same height). ?

Or my other thought would be maybe pick up 2 x SVS satellite speakers,, and just not use the polks..... not sure if there would be a difference in sound quality?
Just need some thoughts or recommendations ?