That reminds me of me, its fun to be running around all fucked up on ritalin and such. Concerta is a bitch with the whole layer thing. Ritalin is crush and snort. My suggestion is just get your parents to help. My mom found out and took me off, if she hadn't I'd be dead I'm sure. But if you need it try finding kids who don't take theres, buy the whole bottle from them.
Stop using, and be glad that all you will have is mental WD's, instead of physical WD's. Seriously that is the best advice anyone can give you....you are taking entirely too much, and it's only going to start causing problems instead of fixing them. That high of a dosage, day after day, might seem fun now, but stimulants eventually will start hurting you, trust me.