I'm interested in Climbing the Sajama and Huayna Potosi peaks in Bolivia in the next climbing season (June 2013). I have some basic experience of using crampons and ice-axe but do not have any really technical skills to handle steep slopes. I'm planning to hire my own guide to hike up these mountains. I summitted Cotopaxi volcano in Ecuador last month which is a walk-up and I'm looking to go up a level in altitude by attempting these mountains. Do you think this is a reasonable plan? Do I need additional training before attempting these peaks with a guide? I live in California so it would be great if you can suggest me some place nearby to train with the technical skills if I need any.