I have a 2000 RG. How about some specific model numbers and combo recommendations (Head unit, amp & 2×6.5 fairing speakers)? I listen to everything from ACDC, Hank Williams Jr, to Enrique Iglesias and Nikki Minaj. (The more time I spend reading, the more lost I get.. I want to change out SOON and need suggestions that I can just COPY.. ((kind of think a 4 channel amp to add 2 lid speakers later?)). Help please.