Samm,
The design of dash you have in mind doesn't actually give you much, but takes away the shelves which you will want to put the phone and bag of loliies for the drive to Wagga. Also unless the angle of the face is the same as the factory dash you start to run into issues with the length and angle of the Speedo cable.
This is a pretty ordinary shot of the dash in my last restore, Desert Storm, and it may not be the most radical but it is very practical. The shelf is a single piece the width of the firewall and the console is two side pieces and the front piece.
It is wider than the standard dash and has room for a few extra gauges. The switches are below the shelf which allowed 'on the fly/drive' rewiring one of the switches for the fuel tanks failed on me. The Moke was completely rewired and has extra fuses and terminal all mounted in the console and has minimal wires under the bonnet. Longer Speedo cable to allow the face to be moved clear.
The CD/Radio and UHF/AM radio are mounted under the dash but are bolted on in such away it takes quite a bit of time to unbolt. And I still have plenty of shelf space, which is carpeted to keep things in place, for junk, loliies, CD's and handy tools.
It is not finished but it was designed with room to grow. One problem I found was the line of sight for the oil gauge on the left meant I was seeing about 10 PSI less than what it was reading and the temp gauge is hidden by the steering wheel a bit.
The switches are for Parking, head and Driving lights, Interior light, wipers(custom two speed in a single pole switch!!), spare(now dead) front fuel tank, rear fuel tank and transfer between tanks.
Not much bling and pretty plain but is the best dash I have had/built in a Moke for touring.
Some notes.
The two speed wiper on a single switch is you turn on the switch and the wiper starts up and then if the rain is heavier you slip the terminal of the motor and stick it on the other terminal and it goes faster.
The ability to hide the fuses and all the wring in behind the console worked because I spent a lot of time, almost a week, making sure all wires were soldered and heat shrinked, no blue crimped terminals and plenty of grommets and protection and good clean terminal for the fuses. Also put a bit of thought into which fuses shared which loads so a blown fuse for a minor item doesn't take out a major item.
The extra time spent on wiring meant I never had to take the face of the console for the 15,000km to play with the wiring or a blown fuse.
Terry