Would this hookup work

Hello all, i have a few questions on my video package install.

i have two lcd tft monitors, dual diversity tv tuner, portable dvd player, video amp so i can add more screens later and a 400watt power inverter.

i want the inverter to turn on and off with the car, i intend to use just a regular automotive relay,

fused 12v to pin 87 (from battery) , ground to 86, (and inverter ground), 85 to ignition switch, pin 30 to positive side of inverter.  Is that hookup okay?

I also have another 12v wire running directly from battery which i used to grab power from for about 3 relays for my lcd remote start system.  Can i just wire another fused relay to this wire, (it will turn on and off with car as well) and use the 12v output to power my dvd, tv tuner, video amp,lcd screens and an aux adaptor for my stereo?  All these will have their independent fuses of course.

am trying not to grab any power from my stereo unit and i think it will be fine since this is direct fused connection comming from the battery.  I just need some imput on this setup, just seems like a ton of stuff needing power.

any and all imput will be greatly appreciated.