Hehe, 4.5M is a bargain, too.
Anyway, you got loads of creativity on your midfield; I'd prefer at least one ball winning midfielder or something of the likes of Moussa Sissoko (Toulouse FC) or Kwadwo Asamoah (Udinese). But that's just me.
As for strikers, Sergio Aguëro and Pato are world stars. Might be too expensive, although Aguëro has a minimum fee release clause of €45M (dunno how much this would be in pounds) in his contract. Well worth the money.