Title says most of it, sorry if it's been answered but I searched 15 min and couldn't find anything.

Trip is still three months off, and I'll be a "Premier 1K" on a B fare...wondering my chances in advance with a SWU...excuse me "GPU" or miles. Of course seat maps are empty for now.

Fare is same....and I'll be flying right out either way...so would prefer EWR-BOM since it's more miles, but if one is usually easier to upgrade I'll take that!