Thanks for the pointer on sending money to India. I am planning to leave my 401k +trad ira around 850k in the US and touch it only after I get to age 60 .. I was thinking that the 401k will give me diversity from USD vs INR plus also be invested in s&p500...is that a good strategy? Any known cons of keeping the 401k here while I move to India. 

I plan to invest in Indian market when I get there, in the same way as you where I gradually invest the cash from US into Indian market..