one thing to keep in mind is that sometimes, people turn without using their turn signals (ok, more than just sometimes...).
just because the guy at the front of the line does not have his turn signal on, does not mean he is not waiting to turn right on red. further, some people stare left waiting for a hole it traffic when they are doing that and don't check back to the right before going when they have a hole. (they should not do that, obviously, but you have to deal with what people actually do...not what they should do.)
this can all add up to he and you colliding if you are filtering along the right to turn right on red.
just something to keep in mind and be careful of.