The first wave of III Pioneers to Idaho will probably be the people working directly for III Arms.
The first building to be built will be the III Arms factory. Immediately after the III Arms factory, the housing units will begin. So the second wave of III Pioneers will likely be folks in the concrete construction business and the tree-clearing business. Much of the land will need to be cleared of deadfall and live timber. A man who starts a timber company can expect a very healthy income. If you are starting on a budget, I don't think you'd need much more than a good pair of leather gloves, a chainsaw, a bit of chain, splitting maul, and a Chevy. My understanding is that many, many folks in that part of the world heat with wood.
Now, all of the homes built within the walls of the Citadel are going to be poured and reinforced concrete. There are several reasons for this, but they can be discussed in comments. Every home built by the Citadel will be left unfinished on the inside and outside. Utilities will be brought into the home and stubbed. If the Lessee wants the builder to use a concrete form, such as Castle Stone, on the exterior (or interior) or any other pattern, that can be done. You folks who want monolithic domes are welcome to them.
But the reason for only building the shell is so that each Citadel resident can control each and every detail of their home. You may want Castle Stone pattern on your exterior. You may want to face the concrete with red brick, or logs for a cabin look, or even go for a Tudor style, it is entirely up to the resident.
The same goes for the interior. If you are a handyman and want to finish certain aspects of your homes interior yourself, you can save a few bucks and enjoy the feeling of putting you hands to work. Or you can hire an interior designer and finish out your homes interior in any fashion you wish, from rustic log cabin to ancient Greek, to modern suburban design.
So I would suggest the third wave of III Pioneers who should head to the Citadel are Tradesmen and Craftsmen. Plumbers, electricians, carpet guys, counter and tile guys, folks who do wood floors, curtain makers, artists who specialize in paint effects, such as faux marble or frescoes, chandelier craftsmen, antique dealers, fine cabinetmakers for everything from kitchen cabinets to elegant libraries, security experts who can wire a serious security alarm system. If you specialize in windows, if you are a siding or gutter specialist, if you install water filters, if you can face a concrete exterior in brick or logs, you will have work.
Check the laws in Idaho and see what licenses you will need so your work will pass code. Check into the requirements for insurance and bonds.
The point, my friends, is that we are building a small piece of America that will operate as Messrs Jefferson and Franklin intended.
Your fortune awaits.
What are you waiting for?