Well I agree that you should set challenging but acheivable goals to work towards, but the idea of riding as hard and fast as you can sounds kinda foolish.... good endurance training comes from long easy rides to establish your "base". a good base is essential because it helps your body get accilmated to whatever activity you're doing, so that you can later intensify your workout wihtout fear of injury. the way you describe your training sounds like you're setting yourself up for injury in the not too distant future.

i'm not trying to put you down, i am speaking from personal experience.... 2 years in a row i tried to do a marathon, and had to pull out cuz of knee injuries. february i did a hard run after work to "make up for lost time" and hurt my knee again. i had to limp home, but instead of limping... i "run-limped" on the other foot, and then ended up injuring my ankle for a month. then 3 weeks ago i was on a ride with two friends and we decided to race up a hill. i won, but i injured my achilles in the process. my achilles is still swollen (but fortunately not painful), and i have two races this weekend .

so yeah that's a long winded way of saying.... be careful of starting too hard too fast into cycling.