If Crouch stays ft, he can score 20-25 goals in the Championship. Almost any team that has a goalscorer like that in it will almost always be in contention for a play-off place.
Get a decent defence and midfeld with Green in goal along with another decent striker (Remy if no one gambles on him now)and QPR will have a good chance of having a successful season.
Once QPR can sell some of the Hughes failures i.e. Park, Granero, Mbia, Cisse, Hoilett, Bosingwa etc, QPR should have some funds to assemble a good Championship side.