Sign [Q] Could use some help on installing philZ-cwm6

Okay so I have a Samsung galaxy s2 gt-i9100. I have rooted the phone and I thought to have installed cwm (which came with the root)
but I still boot into stock recovery (even though Rom manager tell me I have cwm 5.x.x installed or something along those lines).
I know now that the kernel resets to stock recovery. So i am running 4.1.2 and my build number (found in 'about phone') is JZO54K.I9100XWLSW.
I have downloaded 'philZ-cwm6-XWLSW-XEU-5.06.1.zip' from his XDA thread, and was wondering is this the right one for me. And since I am already rooted and all that I was also wondering if installing this will clash with my root and mess up everything- thanks in advance, I really appreciate the help.