yes we have to study a lot for 200 marks but extensive study is needed for accounting both cost and financial . For auditing and taxation general information is expected but the best thing about this subject is you can score good we only need practice.
regarding your prep you can search the forum this question is answered by many senior members. what i know is as follow
Financial Accounting
1.Final Accounts
2.accounting ratios
3.budget
4.partnership
5.depreciation (i think in 2011 they ask a question of 18 marks )
Cost accounting
1.costing methods
2.variances
3.inventory management
4.diff between financial and cost accounting (theory) and other imp concepts
THIS IS NOT ALL THE SYLLABUS UT WHAT I AM PREPARING you should wait for other members to reply
taxation
for the time being do the numerical s
Auditing
1.types of audit reports their formats
2.rights and duties of auditors just regular stuff

as you are a commerce graduate you already know the basics of every single thing and finacial accountingcan be covered if you have studied f3 so good luck