Thanks for the suggestions cxfan

However, these are my comments:
1. It will cost me more miles 75,000 vs 140,000 (2 x upgrade)
but cost only US$630 cheaper

(Trip to Europe, BTW)
2. My wife is Silver but only has a few miles in her account. If my wife is the "paid ticket holder" and she gets me a companion award, isn't it required that the miles will be coming from her account?