Urdu is no doubt an interesting subject and one can easily atleast pass it if enough concentration is given to the syllabus but keep in mind that if you are picking urdu for being easy you are committing the biggest mistake. Only those guys who have some background in urdu literature and are interested in literature generally should opt urdu. Without a strong grip over literary language it is doubtful whether one would be able to get good marks just with the help of above mentioned books. To give a literary touch to your writing read Tareekh-e-Adab-e-Urdu by Raam Babu Suksena and Aab-e-Hayat by Mualana Muhammad Hussain Azad. Abu-ul-Kalam's Ghubar-e-Khatir would also help polishing your ability to write a standard language. Keep in mind that by opting urdu your aim shouldn't be to get only pass marks. I feel and hope that one can score more than 130/200 marks easily if due share of attention and labor is given to Urdu.