Well, when you're going hard, make sure you go real hard.
Before you go hard, make sure you're capable of going real hard.
Rest.
On your easy days, make sure you go real easy.
In general, I think you have the right idea. You can refine your schedule as needed. You never said how many miles your rides were or how many miles you do a week or how many miles you already have under you. Is your fitness fair, good, excellent? If I had to guess, you should be fine with going real hard about an hour a week. The rest should be regular aerobic training or lower.