I am going to relocate to the US from the UK in August 2005 for a
minimum of 1 year with my girlfriend and 3 children. I have UK/US dual
citizenship but my girlfriend, son and 2 stepsons are UK nationals.

By far the most important issue in this question is which places in the
mainland US offer the best quality of life for the most reasonable
cost of living? We really do want to have our cake and eat it! We want
the best possible sunny climate, lack of rain and the ability to rent
a large and luxurious property (5 bed+, heated indoor or covered pool,
jacuzzi, spacious grounds etc) for the lowest possible price. I own
several internet companies back in the UK and so can telework wherever
there is high speed internet access. I am after a list of the best
three or more suitable locations.
 
We also need to know what visa formalities my family will have to go
through. We thought that the easiest route would be 6 month visitor
visas with a trip back to the UK for them half way throught the year
but suggestions are welcome. My girlfriend does not need to work
although is a qualified nurse/PA (called a Health Visitor in the UK).