Good replies to my thread.
It's got me to thinkin.
Gdetrailer is right. That rear view camera is actually extraneous, because my mirrors are actually very good mirrors, and backing into some campsites is usually done by following my wifes bizarre arm waving. By the way.....that probably negates the need for the two way radios since we usually forget to get them out after we arrive anyway.
The GPS is something I cannot do without. Been too many times in heavy traffic on interstates where we have to negotiate complicated cloverleaf type intersections, and the gps has made it much less stressful. So it has to be there, and easy to hear.
Tire pressure monitor has saved a tire or two for me. Let me know when I picked up a nail and lost pressure slowly. You all know the damage that can result if a tire comes apart. So it is a must have item.
Don't really need the ipad to be mounted. We only use it to modify the route planner for the TomTom gps, because the screen is larger than the phone.
Speaking of phones:
1. My wife is getting calls all the time from the kids, so it has to be handy. Hers is the one that is the hotspot for our TomTom gps traffic updates.
2. My phone is the one we load audio books on, so it needs to be handy so that we can pause, or mute when something happens that we need quietness. We cannot do without our audiobooks..........long trips would be murder without them. They keep us awake and make the miles fly by.
So that makes 4 devices that we want to have mounted. Might be able to use her phone for audio books too, so that would get us down to 3 devices. This might work out pretty good.
It always helps to get other folks ideas. Thanks.