don't shy away from carbohydrates, because they are by far the best choice of fuel for someone with your current lifestyle. If you attempt to low carb it as a collegiate athlete you're probably going to crash and burn. Simply just substitute your previous sources of carbohydrate with primal approved starches, such as potatoes, white rice, fruit, ect. Even refined white flour and corn in moderation would be ok for someone like you, assuming you're not gluten sensitive. Make sure you're getting adequate calories.
Again... don't fear carbohydrates. They are the best choice for the majority of your calories given your lifestyle. This might change, obviously, down the road when you're not wrestling anymore. Make sure you're fat sources are clean, eg, natural fats in meat and plants... not man made soybean oil or canola oil, ect.
One important truth you need to realize is that the primal blue print and the "elite athlete" blue print do not align. People following the PB work out only as much as they need to be healthy, for the most part. That doesn't mean you can't take good PB principles and apply them to your life, though, but just be cognizant of that fact.