How many hours will you get from the line training??
250 hrs or 500 hrs..
No matter how many hours, It won't matter...
Even after 1500 hrs, a turbo prop is a LOT of work, at 200 or 250 hrs, you will be basically a gear jockey, enjoying the joy rides from the right seat, pulling gear & flaps, wearing the pilots uniform & getting the feel of something like a airline pilot...
After your hours are finished, the airline will lease your seat to the next guy...
If you are getting those hours in a shady cargo outfit, you will be lucky to walk out alive...
Plus cargo hours will be pretty much useless as airlines want airline time..
Most of the learning happens from the Captains who will teach you but when you pay your way like this, no one will like you & you will be treated like a disgrace to the profession...
The stink is very hard to get off, it carries with you all your life...
So, don't waste your money on buying 500 hrs..
If you have the money & want to learn something, get out of India..
Go anywhere, preferably go to USA, fly some hours, get current & proficient again & do instructor rating & try to flight instruct for a while... Even buy a Cessna 152 in USA & fly it all the way to 1500 hrs, that will be cheaper & will get you more experience in real life than sitting right seat of self sponsored position..
Rest is up to you.... Best of luck...