It really depends on your Track Disipline.
What events will you be running during the Track season?
I want to do the 3200meter but I want to be proficient at other shorter events like the 50meter 100 meter 200 meter and 400 meter
man, you can't be a two miler and expect to be good at the 50, 100, 200, and 400. seriously. those are COMPLETELY different races. maybe you could pull off the 400 if you have the speed, but everything else youre gone for. that being said, at this point since you've built up such a huge base over cross country, to sharpen up id include more HIIT into your training, along with a few 4-6 mile recovery runs.
if you want to be a sprinter, youre gonna have to be a sprinter. totally different metabolic and physical demands.