I wish I had really good advice to give but feel like I don't but will tell you what I know. I would say there are always jobs to teach (although the pay is not great) and it's possible to open a business as a chiropractor. Living in more touristy areas is always a mixed bag: there are more job possibilities (especially for alternative health things) and pay is probably better but cost of living can also be higher. Don't know if you wanted to home school your kids or enroll them in schools but the towns with expats (Puerto Vallarta being the one I know and live in) have schools where they could learn English and Spanish.

To make a generalization, Mexico is more a place of networking and meeting face to face with people. I don't know about job listing boards and that's not to say they don't exist. But my experience has been, you get more accomplished by being in the country and just trying to meet with people.

Different things work for different people but I might suggest a temporary move to Mexico. It depends what your situation is in the US. But if you could come down for a period of time (say 6 months) with enough savings to live on during that time and pursue work and finding a place you like to live, you could see how it goes.

Good luck!