In reply to Lewis climber: Yeah you should be able to get up one at least one (barring illness, bad weather, llama attack, poor acclimatisation),
Day:
1) Bus from Lima to Huaraz
2) Night in Huaraz (>3000m)
3) Night in Huaraz (>3000m)
4) Acclimatisation walk to Laguna Churup (4400 -4800m)
5) Taxi to Ishinca Valley - donkeys and 4 hours walk in to BC (4400m)
6) Climb Ishinca (5420m) easy snow plod PD-
7) Rest
8) Climb Urus (5530m) a bit of very easy scrambling rock at the top (sub grade 1 scramble)
9) Donkeys back down - taxi to Huaraz
10) Bus back to Lima
Obviously you need to acclimatise pretty well and fast to fit this lot in, it goes beyond the standard recommended rate of ascent and not everyone will be able to cope with going up that fast.
Escher