SSR, go to APC's site. I believe they have lift values calculated for their various propellers with motor examples also provided. If you can't find the charts then just shoot them an email and they'll send .pdf files with the info.
Are you in Pakistan? Your IP address gives a location of Pakistan. What's it like flying RC in Pakistan? I fly over from time to time on commercial flights into India but would love to know more about the hobby in general in Pakistan. The mountains are unbelievably beautiful.
Bart