When doing a NG deployment with CENTCOM (Syria and/or Iraq), when will I know for sure where I am going?

First, I'm sure you're excited but you shouldn't discuss unit deployment information in an open forum in detail. Deployments for the National Guard are rare. First, I really haven't seen any Guard units in those areas. I have seen the Guard go to Kuwait and Jordan. You will get a better idea the closer you get. When if you go into Iraq, these are not war-time deployments. I'm glad you will get the opportunity to deploy but after this you may not get one again. Even in the Regular Army deployments are rare. Your leadership will let you know what you know. I'm sure they don't know the details right now.

You probably won’t know till you’re at mob station or in country. Even still, you may very well rotate or bounce around locations based off of the needs of the unit, mission, and boots on ground requirements. Focus on training for your role because that should be your primary focus, and worry about location later. I know you want your patch and experience of what it’s like in country but you may spend most of it in one location (likely Kuwait), or jump around to many locations for brief amounts of time. Either way make the most of it by remaining positive and soak up the experience for what it is worth because deployments are hard to come by these days. Best of luck.

You'll know 80% for sure when handed orders. 100% when you land in theater. However, that is no real guarantee as to where you will end up once you are in theater. For example, your entire element could have orders to deploy to Kuwait but some of yall could get piece mealed to other locations. I mean, if you really want to know, you could always ask your NCOs and Chain of Command. Right now, focus on the training ahead of you. Don't worry about where you're going. Because....there is always that chance (albeit small) your mission could be scrubbed before you get on the plane.