What Should I Run For The 5K?

xc season is just around the corner. my stats are i am 15 years old and i can run a very very hilly 7.2 miler at about 6:43 pace and the last mile in about 5:57 this to me is like a medium/hard run. What times should i expect to run during xc season thank you for the answers. please dont say 18:30+ ive ran those times be4 when i was running 3 miles a day and btw now i run about 7.5 miles a day with 1 day off every week for summer base building xc.