Between 285 or possibly 300 cr, If gets a good response. It's up to SRK and Anand L Rai to give a good commercial entertainer. I'm not going to bash the title of the film although I don't like the name. It's just that Anand is a good storyteller and so it's important to have confidence in him. So the reason why I say this because he's the same guy who gave two great films that were a gem e.g. Tanu Weds Manu & Tanu Weds Manu Returns. One should think he may know his audience well and what they want to see from SRK much the last decade and 90s where audiences loved his roles and films.
I'm not an SRK fan and won't be watching this film cinema due to commitments but Anand L Rai & SRK combination may work if it lives up to audiences expectation from Multiplexes areas. No doubt overseas it no question about this film as SRK has loyal fan base amongst NRI's.
It may be hard for it gain a Blockbuster as Simmba is releasing the week after Zero. However, look it from a positive side and keep your chin up by saying that this film is going to succeed because SRK may suprise everyone with a Blockbuster.