We'll be returning to BA (AEP) from Iguazu at about noon on a Saturday.
We have the option to fly to Bariloche either on AL/AR or LAN.
Stay overnight and take the cruce de los lagos 1 day to PuertoVaras; overnight there and a mid day flt Puerto Montt - SCL.
The flts and lake crossing will probably cost $1000. US.
OR, should we spend those two nights in BA (will be there 6 nights prior to Iguazu) or SCL (we'll be there 2 nights prior to leaving for MEX).
The three in between days in Chile will be in Colchagua valley.