Thanks for all the tips, really helpful. We've settled on doing a 3 day circular hike from Benasque to Refugi de Biados to Refugi Angel Orus and then back to Benasque. Then later another stretch of the GR 11 from Refugi Conangles back to Espot taking a couple of days. Really looking forward to it!
If you need anything ask. I'm away from 5tj August so ask before then!