That seems like a decent general guideline however I'd make some recommendations. Because one of the primary limiting factors in this type of training is the athlete's energy system, I think it's important to not match up the time and distance guidelines unless you are applying it to a specific group of athletes with a known running capabilities. It seems like you didn't really do this and as a result, the time guidelines you list don't really jibe with the distance guidelines. For instance on your speed recommendation you say 60m or up to 6 seconds. Well, most HS male athletes will only be at about 45m in 6 seconds while elite athletes would be closer to 55m. As a result, it might be best to use time as the foundation for your distance guidelines so that you can then come up with appropriate distances based on the speed the athlete is capable of running rather than using more arbitrary guidelines.