Buy nas having already mediaplayer wd

[limer]

Hello everyone, I would have rated a TS-212P, being an entry level that has 2 bays and able me make raid1, to have a consistent copy of my files.
The nas I could use for my target download pc, especially heavy mkv, personal files, and to use FTP server for the recordings of my 3 ipcam, as the need would try to get him to download the torrent and jodownloader, if it were able to do so without continuous stopping, if it is not able i use notebook.
Mkv files would see them through a media player wd tv live, using the nas as a server.
I ask you, can do this the TS-212P? I would not have economic problems in spend 300 € more and go to 251l , if you think it's worth , but I would always get me a Ferrari to drive in the slowly in the city'.
What would notice the difference between a use for my TS-212P and a 269l? just throw away money?