For Accounts : M.P.Vijay kumar or Shukla & Agrawal along with Module And Compilation and for AS part go for D.S. Rawat For Direct Taxes: TN Manoharan (Theory part), for practicals== v.k. singhania For Costing: Saxena and vashist or Ravi M Kishore with module
Also refer Scanners and Suggested Answer issued by ICAI for previous year exams and revised them properly.