Finished blending...

and cropping, the image looks good. I blended the images together using 'Brightness/Contrast', 'Hue/Saturation', 'Replace Colour', 'Free Transform/Warp' and Layer masks.

However, both ends must meet as if they were in the middle of the image. This will be very problematic for me as the ends are actually imbalanced photographically (my first try at panoramic photography...) I may try flattening the whole image and then just transforming the ends. Hmmmm...