yes i realise its confusing.

My pot is small. but gets replensihed enough every year to enable us to go out economy and back business. i rely on the ba miles and use my ba amex for every purchase. Was hoping to book buenos aires using amex 2 for 1 and 50% offer so only 35000 miles for the two of us and then maybe upgrade the flight back if that is possible?

My other option would be Delhi - shorter flight so premium economy would be fine. is it really a waste of miles to book WT+?