^ This is not bad advice.
@moshie ,

Looks like you can benefit from having someone with you. The CB question and the cooler question are a little awkward.

If I were you, I would worry about that 250$ 3" lift kit. Is this it?
3in Suspension Lift Kit for 10-19 Toyota 4-Runner 2wd/4wd [76630] | Rough Country Suspension Systems(R)

Pricey 3" lift kits can be, I would hope, dependable and reliable, but I see nothing good coming out of a cheap, big for an IFS lift.

Spacers are a really bad idea on high-center of gravity body-on-frame vehicles driven long-distances by inexperienced drivers.

I don't judge other folks' tastes, but you asked for advice on far lesser matters while this is a safety and a reliability issue.

How not to have issues on a long trip? First, don't lessen your vehicle's road-worthiness.

Safe travels!