Not having experience with your power pole unit, take a volt meter and measure if the output is diode isolated. That will let you know what to do.
Get your Amateur Extra License. During large area emergencies where HF would be used the General portion of the band will be useless. It was during the Mount St. Helens event.
I gather you will be using a generator. Check your unit out for RFI. Also gas will be scarce. Plan on Solar. At least 200 watts. Use a MPPT charger on the panels. Panel will run about $90 per 100 watts. MPPT charge controller, 40A will run less than $100. Also plan for a spares kit. Parts in an emergency will not be available. Having mentioned batteries, plan of 200 AH to get you through the night, 100 anp.lithium battery will run you about $950 ea.
In an emergency the cell network might not be 100%. I would get a booster amp and a 6 element yagi for the 800 MHz cell band.
Make sure you can lift your go box and it can be located 200 yards from the vehicle.
Instead of a go box I use bags, Radio, Mic and power cord in bag !. Antenna tuner, 9:1 unin and antenna wire, coax, PS cord in bag 2, Solar charge controller and DVM, long power cords in bag 3. Tools and spare parts (fuses) (connectors) bag 4. Each solar panel has its own tilt lever and carry handle.
Also plan on being with out support for one week. Everything you need (food, shelter, TP and soap) you will need to bring yourself. Milk creates are great to carry all your stuff, When not in use they make stools and table legs.
Have Fun.
Mike - K6AER NM