I'm not using the fuwa version (I torrented it before fuwanovel opened) but I checked the contents of the fuwa torrent and it seems to be the same.
Okay mount MUVLUV_EXTRA.ccd and run setup.exe
Choose install.
You shouldn't need to fiddle with these.
Choose directory. I used E:\Program (x86)\age\マブラヴ11
I don't know if installing it in another folder than マブラヴ11 can affect anything.
Also I found out that my current antivirus hates muv-luv (was running another program when I installed it the last time) so make exceptions in your antivirus for BOTH the exe file on the disc (In my case it's F:\マブラヴ11.exe) and the directory you're installing it in (E:\Program (x86)\age\マブラヴ11 in my case) Otherwise your antivirus may delete files so it won't install correctly.
It should install now. It might show an error message when it's done but ignore it.
Run the english patch. Install the game and extras if you want them (i have always used therm so I don't know if ignoring them affects anything).
Make sure this is the same directory you installed it in originally.
Choose to run it.
This should pop up. Let it be.
Then the VN should start.
But what about Unlimited?
You can ignore Unlimited completly right now. Extra is playable by itself. Once you're done with Extra and start Unlimited it will ask for the disk. Install it then.