Congratulations
ANS-1:How many Months since you brought your car.If its more the 5 months get 5k Maintenance as soon as possible.
ANS-2:Central Motors Rawalpindi if not then AZIM Motors I-9
ANS-3:Go For Semi Synthetic (Green Can)
ANS-4:Now on Suzuki Recommend 10k KM.Suzuki New Multi Grade Gear oil would be a better Option
ANS-5:Inspect Control Arms,Make a list of Problems/Concerns if your car any do discuss with them.