I am a German passport holder and a pensioner, which means, that I do not have to work and have luckily enough money for living at a quite good level. I own a condominium in Germany.
I am thinking about participating in the green card lottery, because I would like to spend the most time of the year (not the whole time however) in a warm region like Florida. I do understand the general principle of the green card, i.e. that you have to have the intention to settle down in the US permanently. Since I don´t have to work I do travel a lot however and don´t want to spend all my time physically in the US.
The general rule says, that you are not supposed to leave the country for more than 6 months within a year if you don´t want to loose you greend card.
My practical question is: let´s assume I spend always 7 months within the year in the US and the rest travelling abroad, for example to my home country Germany. Would I risk any problems with holding my green card by doing that? I would rent an apartment in the US permanently and I would have an adress there, but since I don´t work and pay my taxes in Germany I probably wouldn´t have to pay any additional taxes in the US (US-German double tax agreement).
Does it make any sense to try to get the green card? With the visa waiver program I can only stay for 3 months "at one piece".

