Motorcycle sound system

[Cruxie]

I live in the southern AZ area and I have a 2006 Suziki boulevard C90 that I want to try building a system for and need help or pointers on how to go about it . I mostly need help with figuring out how to go about powering it?, like how would I get the alt/charging system to handle a 500-1000 watt 2 amp, 4-6 speaker setup. i have some ideas for the speakers i want and building enclosures into the saddle bags and on the back of sissybar, I'm a total noob that wants my super quiet stock bike to be LOUD with audio instead of pipes but dont want to do something to mess up my bike to where i cant use it.