This isn't a forum that is meant to incourage drug users, of any form, to severely abuse their prescribed medicine. My honest answer is, a 7 hour nap after 5 days of non-stop amphetamine abuse without sleeping, is a mediorce amount of sleep. And once again, my honest answer is that using anymore at all is pushing you even further into the severe danger zone as far as complications and negative side effects go.
Come on man, no body really wants to die, even if it might feel like that right now. Death is so final, where as life always has so many possibilities. I really hope you attempt to see a psychatrist before doing any at all drastic that you might regret, because their are so many solutions to your current problem, solutions that may differ in effective-ness but are still worthy of at least an attempt before you ever consider taking your life. Please talk to some one, a family member, a friend, anyone. Get help, no solution is impossible to solve, and i guarantee your perspective will change down the line. If not for your self, consider how much heart-ache your entire family would go through, forever emptying them of happiness for their rest of their lives as well. People will listen to you, but you have to speak.
I hope you stay safe,
take care.
-pbuilder