First of all let me take an opportunity here to affabley welcome you aboard on the community of future young hot shots of pakistan having you on this forum is not less then a matter of pride and excitement.
Getting back to the topic the combination suggested by you is indeed courteous and agreeable in manner but the matter of concern out here is that which books are to be consulted and in which proportion and would you be so kind enough to knack down the name of some worthy and befitting books for Geography which you personally consulted while going for your aspiration.
I thank you for showing up and hope you will help some perplexed souls like myself.
Keep up the Good work and all the best for your training.