B-course takes approximately 6-7 months and classes alternate between the 357th (Dragons) and the 47th (Termites). First assignment Korea dudes generally will not get command sponsored, but it is very doable to bring a spouse over on your own dime. Other possible assignments are the 354th at DM, the 74th/75th at Moody, and occasional TFI slots with the 303rd at Whiteman.
As far as deployments go, this page has way more info than should be available online about what A-10s have been doing around the world lately.