I love the G100 charade, it was a very nicely built car and very comfortable for its class. If you want the original comfort you have to overhaul the entire rear suspension properly. It should ride like a corolla EE-90.
The original CB23 engine is very tough and durable and is perfect for the car, its also very easy to repair and tune.
I dont know if the market still has spare parts of a 25 year old car but you will need quite a lot of them as most cars in Pakistan suffer from ustadee where an assortment of nuts/bolts/screws/clips get thrown away each time the ustaad touches it.