In trying to help I don't understand why you are trying to do what you say you want.
You want a flash in the hot shoe and a two stage release for remote shooting, I understand that, but I don't understand why separating focus from shutter is important for a remote camera, you either want a picture or you don't, it would seem to me.
So what are you shooting, what distances from the camera, and the environment, and why do you feel the need to separate the functions?
If you can fill in some blanks, so we know what you are trying to achieve, I am sure we can help.
P.S. My $20 Yongnuo RF-602's do wireless two stage remote shutter triggering, the button works exactly like a shutter button. You can mount it in the hot shoe or leave it hanging, like Neuro'sGiga T Pro II it triggers via the remote port so it doesn't matter where the receiver is.