Allow me to point to a fact that as you are shooting RAW, it makes no difference what so ever whether you have aRGB or sRGB se as color profile in your camera. Color profile comes into play once you start editing your RAW file in a image editor. The camera color profile option is applicable for the in camera JPEG generation, for example if you are shooting RAW+JPEG, then the JPEGs will be generated from RAW using the color profile you have set in your camera.
So as my esteemed fellow member has already suggested, I would second his opinion. Import your RAW file in editor, edit in aRGB color space, after all editing steps are completed convert the color profile to sRGB, save the photo as JPEG.