Inverter options in a motorhome
I'm building my second carputer and this ones for my motorhome =P I plan to put a full desktop in there since there is plenty of room for equipment. I wanted to know my options for powering the system. Planning to run a 7" touchscreen in the front cab and a 17" LCD screen in back for TV/DVD viewing. I have a dedicated deep cycle coach battery and plan to use this as the main source of power. I will not have access to 120VAC unless I crank up the generator... which I don't plan to do. So would a 300 watt inverter work? I plan to feed 12vdc power to the 7" and 17" from the case PS, or should I run those from the 12v coach battery? Which power is cleaner? Would like to turn on everything with one switch. What's my options there? Can't leave the inverter on cause it will drain the battery. Thanks all for your suggestions.