We are planning to take 4m express from Cusco to Chivay, than 5 pm bus to Cabanaconde. Next morning hike down to Llahuar, spend a night and take local bus/combi back to Cabanaconde and continue to Arequipa the same day (or next morning if it's late or we have to hike up from Llahuar). Apparently there is a bus or combi passing near Llahuar very early (5 am?) and another around 11 am. This will leave us time for Arequipa and Nasca and maybe Paracas. Is it realistic? Is a hike down to Llahuar enough for Colca Canyon or should we spend more time and hike to Sangalle, spend second night in the Canyon and hike up on day 3 (not very keen on that, we will do a lot of hiking earlier in our trip and my husband is too heavy for donkey/mule ride up). If we stay longer in the Canyon, we wouldn't have time for Nasca and probably would fly to Lima from Arequipa.
My main question is if the scenery on a hike down to Llahuar is comparable to a walk at the bottom of the Canyon (from Llahuar to Sangalle), or is it much better on Llahuar to Sangalle part (better enough to skip Nasca lines flight). Another possibility would be to stay 2 nights in Llahuar and do a day trip to Fure /waterfall and back to Llahuar.