auxiliary lights

Today I need some good advise to add some auxiliary lighting and other electronics to my bike. I have Denali's DX (dual intensity 1.5 amps per pair), D4 (3 amp per pair) and a SoundBomb (20 amps) (total of 24.5 Amps) that I want to install. I also would like to add 1 gps and probably a phone...