I'm a wubi user and I can type 60 to 100 Chinese characters per minute. It took me several months to learn this input method, which was a really boring experience. However, I enjoy the input method now.From my point of view, firstly, you could never manage it before you know how to write Chinese characters. Secondly, it took me days to remember the radical and which keys they were maped. It may take you some more time. At last, once you've finished the study, you only have to keep practicing.
Anyway, I have an excellent software for beginners. Sent a message to me with email address appended if you want it.
I hope it's useful to you