You probably are crazy, but you and we knew that. Just keep getting weather updates and bolt like lightning if it sounds like its ok. thing is it can change faster than you can ride of course.
You are on perfect course for the Carretera Austral. From Puerto Mont you are going to ride out of town for 45min to a ferry landing then take a short ferry ride to Hornopiren before getting on another ferry for about 4hrs that will take you just north of Chaiten. Then you are on the heart of the CA and you will never forget it! GAS up often. You can take it all the way to O'higgins, but you cant cross over there, or you can bolt over to Ruta 40 by going around the lake to Chile Chico. In Chile Chico you could stay at the excellent "Patagonia...?" hostel, a cool old house that some ladies run. Just past the main part of town on your left. Might be closed also now.
Like I said earlier if you want to make time just head on to Perito Moreno town on Ruta 40 and then south and GAS UP often, you can sometimes find NO GAS in many of the smaller outposts! I promise you! Get to El Calafate and relax and get the weather reports. GO SEE the Glacier Perito Moreno DO NOT MISS IT!!!! If you ride out you must show up at 4pm to get to the upper parking lot. There is a nice dirt road out of town that leads to the paved entrance road. ask around and take this ripio road..
Good luck and stay in touch... let me know if you have other questions..