I don't think I am particularly fit. I just summited Elbrus last week and that felt very hard.
If I went to try Aconcagua it would be January giving me 3 months mayyyybe 4 months training between then and now. I am from Australia so everything would be at sea level and I wouldn't be able to get in any small climbs (Cotopaxi for example) just before going to do Aconcagua. It would be straight in and out.
I have climbed Huayna Potosi, Island Peak and Elbrus all guided. I feel as though I would be pushing it, the other option is to do some other climbs and do Aconcagua at the end of 2014.
A penny for your thoughts.