We are thinking about moving to Portugal in 2013, to give our son the experience of living in another country and to try Portugal on for retirement. We own our own business (internet based) and home school our teenage son. First, is there any problem with homeschooling (internet based high school)? And second, continuing our business there?
http://www.homeschoolmedia.net
http://ensinodomestico.ning.com
http://aprendersemescola.blogspot.com
However, have you considered, if you do homeschool, how will your child intergrate with his peers, learn, the language and appreciate the culture in his new country?
My daughter was homeschooled, not through choice but purely because she was iceskating full-time. She left school at 13yrs, but a year later I found out she had written to the school asking to meet up with all her old friends and teachers. She was obviously missing something. The school wrote to me and denied her request - said it would upset the other children. I was at a loss what to say and my daughter just sat down and cried.
As far as setting up a business is concerned find a good accountant for latest advice. Try contacting AFPOP (Association for foreign residents) Home this helps and good luck with your move!
By the way, for a glimpse into expat life in Portugal, have a look at my blog Piglet in Portugal