You need to be aware that going down this route has its own limitations. Exposure times are considerably longer and anything that moves (trees, grass etc) will have some motion blur.The other alternative is to have it converted to full spectrum, then just use external filters to suit
You should also be aware that many lenses don't perform well in the infrared spectrum and produce areas of vastly reduced contrast (known as hotspots). It'd pay you to research the performance of any lenses you intend to use rather than discover the fact after paying for the conversion.
Bob
The EOS M only has Liveview for focusing so at least I won't forget about that aspect of it.
Colour1.jpg by Vorn Eo, on Flickr
IntelligentAuto1.jpg by Vorn Eo, on Flickr
Basic1.jpg by Vorn Eo, on Flickr
Colour2.jpg by Vorn Eo, on Flickr
IntelligentAuto2.jpg by Vorn Eo, on Flickr
Basic2.jpg by Vorn Eo, on FlickrPlus, shooting in RAW changing the WB afterwards is not a problem.
I don't think I can complain at the conversion for £99, I'd rather have someone else do it for me than try and do it myself, I'd probably kill the camera.
St.Laurence_Church-0004-Edit.jpg by Vorn Eo, on Flickr
St.Laurence_Church-0003-Edit.jpg by Vorn Eo, on Flickr
Graveyard_Tree-0001-Edit.jpg by Vorn Eo, on Flickr
St.Andrews_Church-0003-Edit.jpg by Vorn Eo, on Flickr
St.Andrews_Church-0001-Edit.jpg by Vorn Eo, on Flickr
Garrison_Church-0001-Edit.jpg by Vorn Eo, on Flickr