Thanks! I did see that earlier but it does certainly look more attractive than before now that I've been through all the others XD

So basically looks like...
154k UA miles den-ewr-lhr (but redeye on a 737 though)
or self position to Vegas for the night then las-den-lhr for 122k UA miles (long leg on 787)
or self position to Houston (15k ua miles) and 87k asiamiles + $350 for BA first on their 787-10

I already have the asiamiles and 15k UA miles in hand; for the other options I'd have to burn UR making them that much less attractive.