For the moment I decided on the upper. 80 would have been great for just me, but my daughter prefers windows as well as having a pocket in front and a place to put her carry on to keep with her, so this way we get to sit together and she can have all her stuff and I get my preferred aisle and quiet.
I'll set up an alert and still hope that a business seat opens up, maybe two and we won't have to sit in economy all the way there. I'm getting too old to be sitting for these long hauls.