Currently E-6 with orders to Korea in 2018. What happens if I get selected to E-7? Do I still go to Korea?

Congrats on your selection to SFC by the way! Sequence #2

I was a SGT(P) when I got orders for Korea. I got promoted to SSG during my second week in Korea. Heck, the Company 1SG was so intent on promoting me on time that I never really completed inprocessing (D CO, 3-2 GSAB has a "Green Platoon" where you are assigned until you complete inprocessing; I was pulled out early in order to be promoted)

Yes. Korea is a great place for career development, especially for a SSG(P) or newly promoted SFC. The experience of being a Senior Noncommissioned Officer is a highly demanding area of operation is invaluable for your professional growth. Embrace it brother, and best of luck in your future assignment.