Edit: Sorry, that's 60k - 70k gross, not net.[/quote]
Hi!
Hope you are not considering relocation to restart a life. This does not not necessarily work.
Difficult problem in France would be getting work, and all the more so for non-EC nationals.
Have a look at some of the red tape - you can also get information in Americain at a US French Consulate.
Etrangers en France - Service-public.fr
With your income, that should be no problem , as long as you keep away from Paris of very large cities, because house or rental prices can be very high.
To enjoy France, your French knowledge and that of your wife should be reasonable.
Yours,
giantpanda
PS. Once you are a French resident, you would be need also to make a French Tax return ( declaring your world income, including the taxes paid elsewhere ) which does not necessarily meen you would have to pay income tax in France.