New Diet Recommendations?

Hey everyone, I think I'm in need of a new diet plan. I was reading that a low calorie diet isn't always a good one, especially in my case, where I'm dropping weight and gaining muscle. December of last year i was bordering 300lbs and now I'm near 190. I go to the gym for high intensity workouts at least 5-6 days a week. I also fit my cardio within the day every single day of the week. Now I understand that in order to keep a high metabolism, I need to eat more calories but I think I'll find this difficult. I'm a college freshman right now and its hard to find healthy meals that can satisfy a recommended calorie intake on campus. I have my green and leafy vegetables as well as fruits and proteins and such to keep me going but sometimes my daily calorie intake doesn't even reach 1000 and on somedays it doesn't reach 700 unfortunately. I'm running on a tight schedule in school so its hard for me to keep my nutrition balanced and I'm scared of eating sugary foods like Pop Tarts and stuff that can quickly raise my blood sugar levels at the cost of raising my calorie intake. Any help as to what foods I could and should be eating in order to drop the rest of this weight and maintain my high metabolism? I think my daily calorie count should be around 1500 according to this equation I used. But there are so many foods out there that I hear can be risky for people losing weight so I'm a little hesitant. Thank you everyone!