spare parts of 84-88 Corola are not easily available now a days.
Since you intend to keep car for 4-5 years having not much trouble in maintenance and availability of parts, I will suggest to look for Mehran. You could get a good conditioned latest models Mehran in that much price which will last 4-5 years easily with careful driving and maintenance. though you do not like Mehran.
This seems a cost effective option for you being a student in terms of both maintenance and fuel. above all with high resale value.
If you can increase your budget say like 700000 ~ 800000 than Cultus would be best to buy