Now that Georgia is solid blue me and my wife are moving from California where is the best place to move in the progressive peach state?

The only part of Georgia that is blue is Atlanta. Californians are most likely to be welcomed there. You might find that your somewhat less than welcomed in the rest of the state, although Southern Hospitality is very real and it would take a while before you realized that you would viewed as less then human by the locals.

You'll want to stick to the major cities because it's not like this isn't the state that elected Marjorie Taylor Greene to Congress. Just like California, Georgia is neither solidly blue nor solidly red. 

If you  like  the  big  city  Midtown Atlanta or Virginia Highlands if you like  more  of a suburban feel in a big  Metro East  Cobb or Sandy  Springs and if you like the country but  not to  far  from  the city Stockbridge isn't bad and if you  wanna be  close to the beach  St Simon Island. 

just go wherever you want

You do that since it's a "solid" blue.

Trump lost by 11,779 votes out of the 4,940,000 votes cast

Ossoff won by 1.2% of the votes

Warnock won by 1% of the votes

Trump lost in California by about 5,100,000 votes.

Yep, Georgia is SOLID blue, if you are talking baby blue.

And California likes liberal politicians but not liberal policies.

The SCREAMED that loud and clear - Nov, 2020 and definitely has Newsom scrambling...

Come on down to somewhere in East Atlanta you are sure to have a good stay