Dear friend Welcome to DFC, With my experience I can tell you that Daewoo is a tough, stable, comfortable, spacious, economical on CNG, not relatively expensive to keep kind of a sedan at SUCH A PRICE at this time.
Besides realistically speaking, who can guarantee you for ANY MAKE old car not to give you any kind of trouble for next 3/4 years with such mileage. I personally think It could last to your expectations of total 250K+ mileage if it were a single hand driven and very very well kept.
The best you can do is to make a good judgement and show it to any of the Daewoo's mechanic (you will find plenty of references at this forum). See the documents to be correct and up to date and try to negotiate. All Daewoos in Pk are 1992/93 model to the best of my knowledge and then registered in 93, 96, 98, 2001. I think except 93 others are officers' scheme. So assuming it to be of officers' scheme and not taxi scheme I think you may go for a price tag of around 300k or less (Well it totally depends on the condition of the car).
Lets see what the other members have to suggest to you....