You can try Yongnuo YN-622C, even one unit is enough.
It's a cheap transmitter, but that's not the point. You can connect your flash on top of it. It tricks the camera like it's a Canon flash. But I'm not sure if it will work with 700D. It works it with 550D, so you need to check the compatibility..
It works better than ML hack, I've tried both. It is very convinient and reliable way to use studio flashes (connect their transmitter on top of yn-622)