Augustin was tracked by a number of clubs, including Legia Warsaw, so I can't imagine he'll do too badly.
Reilly is young, but talented and could work out pretty similarly to yourselves with Stewart last season, although it could take him a season or two to find his feet.
Juanma, unknown quantity, could be hit or a miss, but with the players brought in so far in the last season I'd guess it's more likely to be the former.
No idea about anymore signings, but I'm extremely optimistic about them, and the season ahead.