brother the amp you have bought is one of the better amps around in that price range.
strong, durable and packs a punch.....a little powerhouse but gets a bit warm sometimes so be careful.......in playing it over long hours...overall a nice package........
as for the rest of your setup you know what my views are on that which you have asked me on the pms........
get the pre, then the speakers and the sub........but if you want to get the speakers do go for it first..........
the above would be my order yours might be different.....
as for which focal speakers to get do listen to the views of people such as madhouse, mughal90, roms etc as they have experience with focal components...they will tell you which one you should get