for spl you need to take result of your conversion paper it will be issued in day or two charge is around `2000
according to some cfi i spoke with you can give checks if you have rtr but other says u need to have frtol to fly in India.
i went to dgca but no one gives a clear answer from them . on safe side apply for FRTOL.
it will take around 9-10 hours in c172 including all checks
GFT DAY 1HR
GFT NGT 1HR
250 NM 4 HRS
120 NM 2 HRS
IR CHECK 1 HR
you have to pay around 7000-8500 for aircraft rental and 5000/hr separately to check pilot. few flying clubs have extra 2000 for night flying.