Finding I-class availability on UA to India will be near impossible. So getting UA at 75k miles per person and direction will be VERY difficult (let's call it impossible). JN will be priced dynamically and for India will be easily 180k or more.

Your best bet are *A routings via Europe (or NH via TYO) which are not dynamically priced (no matter what folks tell you). 93.5k miles on e.g. TK or LH looks reasonably available and its not a bad deal IMHO. You can also often find $2800 paid fares to India.