Hi there,
I too am recent arrival and enjoying myself very much--the altitude hasn't bothered me and in fact my asthmatic condition doesn't seem to be an issue.
In my opinion, If altitude is a possible issue--then you may be wise to check with a medico first--because it is high!!I am from Calgary Canada where the elevation is about 4000 feet and I loved it --the climate was perfect for me as it is here in Cumbaya--just outside Quito.
I My learning curve with the espanol I know has been very sharp and I think I am improving but still want to take more classes--lots more--at an intermediate level. You see- I think we are in their country and it is up to us to try.
I hope you both follow through with your dream--its worth it!