Wait for the Electric Rubicon and take the guts from that.
A couple years ago I passed a flat bed trailer with a modified Rubicon on it. The typical big tires were not unusual, it was instrumentation added and the DOT label on the tow vehicle that was interesting. Rivian was doing benchmark testing on a Rubicon for off-road performance. So in a few years you might look there.
Or the new Electric F150 might have some good donor parts in a few years.
Looked at EVwest a couple years back. There stuff is aimed at lightweight cars. Old VWs and the like. They are the big name, manage to get in with all the TV shows and news outlets. They are clearly the best at marketing the conversions, but being good at marketing does not make them the best at the conversions.
As for the Bronco itself, it is going to be a very difficult conversion. The drivetrain part is generally the easy part. Battery packs get to be interesting. They are big and there are a lot of them. They also get heavy when you start putting them all together. Most cars have gone with the skateboard approach, fairly flat and under the floor. Pretty much the entire floor which is a substaintal amount of real estate. A Bronco doesn't have that space to give up.
Rumors are that there will be an electrified version of the new Bronco. If they make that in a 2-door, it might just be possible to put an old Bronco skin on a new Bronco and call it good.