Manjunath, Based on PM that you sent to me..I am posting opinion regarding 2nd group...
Firstly make your mind that you are going to play a tough battel and you will do it...
I consider each one of four as dangerous and anyone can defeat you...so be ready...
Talking about points..
1) Cosing-O.R-- OR should be good and conceptual...costing is uncertain but OR is easy..In marginal- clear your logics and application as well...moreover Standard costing--mug up formulas..Thory of costing and OR sometimes saves you..sums may be twisted but never theory can be that much tough..so learn it well..
2) ISCA- Beware-polish your language and focus on Chap-5,6,7-Its small and easy so secure 30 marks there...then you go for other chapters..
3) DT-ammendments are always advisable to study thoroughly....Assessment proceedings and Wealth tax and PGBP presumes 50 to 60% marks
4) IDT- Again ammendments..This time focus on POT rules and as usual CCR and SSI is important..In custom atleast these 3 should be done..Valuation, Warehousing and Duty Drawbacks...I use the words Atleast Ok..
Dnt forget RTP-For second group i will advise you to go for last 3 attmpt's RTP
Be aware but dont beware...
All The Best
-CA Darshak Shah