Firstly, ILS. You will notice that Ariana Afghan Airlines is the only airline which has operated in Afghanistan in the last few years. The rest were merged into Ariana many years ago, or just ceased operations completely. Balkh Airlines, from memory, was an airline set up by the northern warlords.
As to the aircraft which they will operate.
The reason Airbus was able to place A320s with Libyan Arab was because, even though Libya had just come out of sanctions, they still had money to "burn".
Afghanistan on the other hand does not have an economy which is reliant on oil or other natural resources, and as such is quite poor.
As I have suggested before, the most likely fleet for a rejuvenated Ariana Afghan is a fleet of second hand aircraft made up of Tu-154M and other Soviet types.