Hi Blake, a decent sized room. The response doesn't look too bad. You might get a fuller picture by averaging the responses taken at a couple of spots within your listening area.
Check out the Primer. I have concluded you are best using one speaker at a time for Frequency response, but you can get better Waterfalls by driving both speakers.
With this size room you could probably do better. It often works out best to fire the speakers down the length of the room. Consider that rotation and maybe try moving the speakers temporarily to take a few measurements to see if there is an improvement. Those are small speakers so I would not be afraid to move them close to the front wall, even in your current orientation. Try it and measure. You could get some decent clues as to where the room anomalies are strongest using a room mode calculator. I like the one at
www.bobgolds.com and for a more pictorial view
hunecke.de | Room Eigenmodes Calculator
Use a fusion of all these tools to get optimum speaker and listening positions.
Full corner traps at the back would certainly help. If you go for the lengthways orientation some diffusion behind might be nice. You could use wood slats for the front of those corner traps. Take a look at John Sayers finishes.
DD
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