Hello everyone i am currently building a DIY laptop stand for a school project. I just need some help with some electrical aspects of it. I am using a 12v power supply with two 0.2A fans attached a 50w amplifier that have 2, 20 watt speaker 8ohm impedance and a 120cm stretch of LED lights that need 0.75A. My question is would all of this run off the one 12v power supply? and if so how many Amps would i need to do so? Thanks