I have baleno condenser in margalla. Margalla has same ac as cultus.
It is like city, when the car is moving, but not that amazing at idle (keep in mind that the condenser fan is slow and condensor is also old).
So do the following
First, make sure that condensrr fan is nice, the stock one is slow, get one with a nicer fan and higher rpm.
The fan should also be fitted nicely, so that air does not escape anywhere.
upgrade to baleno condensor (i got kabli) but i have heard that new is also available
The baleno codenser.covers the front of the radiator also, which means you can take advantage of the radiator fan too.
So first, upgrade the fan and then the condenser.