Frankly I see nothing wrong with your idea. You say "dolly" do you already have one? If not they are not that hard to build if you can cut/ weld basic metal, square tube, channel, etc. As others said you need a transmission installed or at least a flywheel/ bell and and something to anchor the rear of the engine.
Trans: Automatic would require a jumper tube for the cooler, a rear yoke, and ATF installed. You don't want to do so dry.
Without a trans, you need a bell/ flywheel/ starter and fabricate some bracket from the bell to anchor the rear, not difficult
Alternatively, you could use a flywheel and fab a plate to mount the starter. I have used just the engine plate off a scattershield. This is not "right" but I have "other starters" so if I break one it's no big deal
You really should at least fill the engine with coolant, even if no rad, so you'd need a jumper hose / tube of some sort to bring the lower outlet up even/ near the top outlet.
Controls? Really all you need is an oil pressure gauge, and maybe a temp gauge, but you can use "your hands" or a handheld infra red thermometer. They are nowadays cheap and easy
Electrically you need a simple ignition system, a battery and battery cables, and just basic jumpers to operate the starter.
What you have for a distributor will determine that. I often use an HEI module and coil "in a box."
This works with Mopar style breakerless distributors
I know it's "redneck" I've even test fired engines for a short time on an an engine stand, with makeshift support under the pan
This here is about the most redneck "engine run" I ever did..........
Yeh, it's an adapter Yeh, a carb goes on it HINT: It's temporary. It's Mopar. It's NOT for a slant six or a V10
www.forabodiesonly.com
Made redneck adapter to mount AFB carb onto EFI magnum
Engine stand, engine plate, flywheel, starter mount........
A little "support"........
The emergency ignition box + a breakerless dist.............