I would not look for EB coils on that B2. Just don't go out and buy random coils unless you know what you are getting into. I know this looks like a perfect solution, but it isn't that simple. I would not buy any coils unless I had the spring rate and open length on them, plus had weighed my truck and knew my front axle weight. I wrote all this up years ago--10 or more--and it's in the tech library. If you have his exact truck and he gives you the part numbers, then fine. Ford used different rate springs for every possible setup--different ones for the same truck with and without certain accessories even, so don't just buy what someone else has. I've been threatened with death by people with a V8 Ranger that bought my coils and didn't do the math I lay out in that old article.
This proposed article looks good on the surface, but like I said--what are the part numbers? What are the spring rates and heights of those EB coils? I don't like those radius arms, honestly, because they've been done a million times and they bend. Especially since the limited tire size of that axle means lots of ground contact.
I've never had your type of transmission crossmember so I assume what you did was needed. As to the steering, binding isn't an issue in the tierod ends if your suspension lift isn't over 4". My truck has a lot of travel, but a low lift, and that's no issue. The tierod joints are fine if they start in a fair position.
The beam window has to be ground out large enough for your head to fit through--and the axle yokes must also be ground out or the joints will bind and snap in real use. I have info about that in the tech library.
My truck is locked on both ends and has been beaten to death on 35" Hawgs without axle failure. The key is in the window and in clearancing those yokes.
I like that your truck is low. It's a good setup. I mainly want to caution people that your springs may not be suitable for them. Also, check those yokes. Those are posing pictures. When you are hammering on it the suspension flexes even deeper and the yokes are going to bind and snap.