Hello!
I'm new to this forum and I have a question regarding my goal fitness levels.
Firstly, my goal is to run 5km in 18 minutes (not just once; as a fitness level - can run it in 28)
Then, to be able to do my workout routine - 50 push ups (can do 30), 50 squats (can do all), 50 calf raises (can do all), 50 mountain climbers (each leg- can do all) and 50 crunches (can do all). Will be referred from here on as the Routine.
Structure of the routine: 50 Mountain climbers
10 Chin ups
50 Squats
10 Chin ups
50 Calf raises
10 Chin ups
50 Push ups
10 Chin ups
50 Crunches
10 Chin ups
My modified '300' workout
I will follow a push up program, about 4 weeks to 50 and a running one for as long as it takes.
This would be my week once I'm able to do the above:
Monday - Morning - 5km run
Afternoon - Routine
Tuesday - Morning - Rest
Afternoon - Routine
Wednesday - Morning - 5km run
Afternoon - rest
Thursday - Morning - rest
Afternoon - Routine
Friday - Morning - 45min easy
Afternoon - Routine
Saturday - Morning - 5km run
Afternoon - Routine
Sunday - rest
Some notes - I'm 15, 6'1", 140 pounds, and quite strong (people think im a twig for my weight and height, but i really am not...

have a 6-pack
Diet - dont eat junk food or sweets, drink water and only water, i dont measure my caloric intake, eat 6 times a day and am conscious of what i take in. Sleep 8 hours a day.
Questions - Will I be overtraining?
Any suggestions?
Do you know of a running program? I've got one but I want to see which is the most effective.
Thanks for your help!