Conversion is worth it, but maybe not that camera. You may not be happy with a 10mpx camera conversion especially considering most IR seems to be done in the landscape realm.
I went through lifepixel and got the standard IR. I'm happy with it. I convert everything to B&W, so tone is more important to me than colors rendered.
I can't comment on focusing issues, as i converted a mirrorless, but conversion does limit your lens selection. Some lenses create a bright area right in the center of the frame. Lens quality isn't the cause, it's some math thing with how some lenses are designed and built. I've seen a list someplace that shows affected lenses, but I can't remember where. I haven't taken my 11-22mm off since i got it.