Maybe instead of "changing", just add a new site in the US, new name, re-arrange the order of pictures, alter the text a bit...

Maybe do it with a "free" blog host.

I'd like to think that Google search results are not biased as to geography of the host... but they could be in terms of where the web surfer is located when doing the search. A surfer in the US might get different results than a surfer in Europe.

I know from being in the UK for 6 months in 2011, then Prague for almost 3 months, my search results were a bit different from here in the US.