CS inter + CA .. is there any benefit ?

If you complete your CA, then i don't think cs (inter) will give you any additional benefit.  However in CS you can appear for final exams with training pending i.e. you have the option to go for training after clearing cs final, hence you can start cs; But do complete it, otherwise in my opinion MBA will be better than CS(inter)

I also thinks MBA will be better option than the CS !!

go for CS only if u hav a strong affinity towards corporate laws & governance. However, a Full time MBA frm a reputed BSchool will be a much better Value-addition to CA.

full time means out of industry for atleast 2 years .. are there any other good options ? moreover wts d diff in course structure of CS and CA??

development of skill wise, ACS is better than MBA. doing MBA ,you can develop your personel development, but doing ACS you can develop your skills and development than MBA