What route are you thinking of?
The "normal" or the Garganta, can vary in condition from season to season. The crux is passing through the ever changing ice fall below the Garganta. In years past the objective danger was considerable and few parties ventured out. The warming trend has not been kind to the peaks of the Blanca, and conditions are variable at best. This year, seemingly, lots of climbers made the attempt, including my pal Kevin Trieu. For this route, it may well be a last minute decision, based on conditions you encounter next year. In 2002 I had friends killed on this route, so I have more than a passing interest. The Shield, or West Arete, would be a good alternative. This way you would only pass through the most dangerous zone once, on the way down.
The slopes above the Garganta leading up to the summit area are uniform and lower angled, but crevasses and seracs may present problems. Also, this area enveloped in a white out or cloud might make navigation difficult.
Many things to consider. Huascaran by any route is not a trivial outing.
Food for thought.