Goal: Lose 50lbs of FAT by the end of June
Diet: 1500 calories a day, 5/300 calories meals a day, 70% protein/30% carbs (high fibre)
1500 calories is to low. What is your current weight? If I assume you are 5'10" and 200lbs for illustrative purposes, you need about 540 calories per meal to lose 1-2 lbs per week, with 4-5 hrs of "moderate" exercise. Weight loss "faster" than than is considered unhealthy. With weight loss faster than that, I would be concerned that your body would start consuming lean muscle along with fat reserves.
You would need about 2500 calories throughout the day, or about 200 more in each of the 5 meals you allow yourself.
Here's a guideline.
To lose 1 pound fat per week
Current Weight Calories
280lbs (127kg) 610cals x 6 meals = 3700 cals
260 lbs (118kg) 560 cals x 6 meals = 3400 cals
240 lbs (109kg) 510 cals x 6 meals = 3100 cals
220 lbs (100kg) 460 cals x 6 meals = 2800 cals
200 lbs (91kg) 410 cals x 6 meals = 2500 cals
180 lbs (81kg) 360 cals x 6 meals = 2200 cals
160 lbs (72kg) 310 cals x 6 meals = 1900 cals
140 lbs (63kg) 265 cals x 6 meals = 1600 cals
And just for reference, I started at ~17% body fat on September 1st, and was down to 6% on Dec 18 using the above formula, using resistance training only, 4-6 hours each week, eating only "good" calories, and never cheating/snacking between meals.
If you're really serious about losing the weight, if you don't already, start to love skinless boneless chicken, can tuna, brocolli and cauliflower. You'll be eating a LOT of it.
And a good multi-vitamin. And drink lots of water.
And I HIGHLY RECOMMEND a "cheat" meal once or twice a week. I'm sure others will disagree, but the "cheat" meal is very important to keep metabolism high, IMHO!.