I think the most commonly held view is that it would be better to get the WTO negotiations done first, or at least get the shape of an agreement made pretty clear before the farm bill is finished. The U.S. administration has told us they can always go back and make changes to the farm bill afterwards, but in our estimation it would be very politically difficult to go back and change a farm bill, and in all likelihood make it less generous, after they've already designed it.
So our preference, if the timing could be made to work, would be to get the negotiations advanced further than the farm bill.