Haven't purchased the 650 yet nor the 18-55. I am still using my nephews 60D.
Are you suggesting wider than 18?
Are you suggesting a CANON 10-22 or a PRIME Wide Angle Lens?
Nothing really wrong with this shot; a bit too cool white balance for my taste.
You just need a wide angle lens (saw you purchased the 650; the 18-55 is slightly wider than this)