Consider only if...
...you're really desperate or hate your family (or vice versa...)
6 weeks on 2 weeks off! Think about that, is it worth? Lot's of looong stbys in the vibrant Mumbai, you gonna miss home after few days, too much loneliness.
And this is for nothing: there's no need to be 6 weeks at company disposal on widebody fleet.
The thing is you'll be a permanent stby for the local pilots: whenever they don't want to take a trip (because of the cricket game, holidays etc) they call and rostering pull an expat.
Most important: there's the new rules of Flight Duty Limit to be enforced late this month. They'll need you as relief pilot on long haul. You'll be mostly babysiting the locals.
But, basicly, the work pattern rotation is killing.