Looking for advice & parts

[Systems_Engineer]

I attached a picture of my wagon, and a picture of a vehicle wrap I am interested in. I am debating on simply overlaying this on top of existing vinyl, that and tail gate, or anything that looks cool. I just wanted to ask the community if any of you had some cool recommendations?

Also,

1. I need a solution to auxiliary switches. I want something that ideally mounts below the shifter knob OR has a display that windshield mounts where the bulk of wiring is in engine bay and only a cable to a screen is in the cab.
Ideas?

2. I need a solution for power distribution for auxiliary hardware. I just want something expansive to the stock system that can mount cleanly nearby.
Ideas?

3. I have a little 5.5” touchscreen handheld windows PC that I will be using for tuning and displaying my trucks PCM data. I want to mount this either in the windshield or somewhere more “permanent”. Anyone know of an entity that does custom mounts?

Thanks fellas.

I have a stage 2 BTR camshaft, catted ARH headers, Johnson Performance axle oil lifters, and a bunch of **** on the way - so I want to identify solutions for this ASAP while my engine is in mpieces