If you cannot trade on MCX, will you be able to trade the $ denominated contract sizes of Oil and Gold on Comex or CBOT? Crude contracts on CME are 1,000 barrels. 10Cent move = 100$ = 6,000+ rupee per tick. Gold ofcourse will be much more. In essence, what you are doing is that to escape from the chasing bull, you are running into the lair of the maurading bear. (Pun intended)
Good luck.