before you start the project, check the market value of the car of same model & condition. and another with a BETTER condition. Check the price difference.
& only than evaluate if the resources you plan to spend on such 'restoration' is worth the time & money or not. - after all its your car your money, indeed your time which is most precious and priceless.
Baleno 1999 - with approx 200000 km & above on odo & good body shell condition is in range of 480000 ~ 560000 at max. low milage well maintained tops at 600000 - please do your maths & make a wise choice, Good Luck