I would personally go with the 45/70. There's a wide variety of power levels in factory loads, from Remington 405 gr SP at 1,300 fps to Garretts or PMC hot rods. With reloading there's even more options. Pressure levels from 18,000 to 40,000 cup. Recoil is stout, but slow in coming compared to the 454.
The 454 Casull is also a good option with 45 colt loads for lower recoiling fodder. While the T/C will handle the 454's 55,000 to 65,000 psi, why subject the frame to that pressure. The 454 tops out, bullet wise, around 360 grains. The 45/70 can go 550 grains plus. A 45/70 with a 300 gr bullet will do close to 2,400 fps out of a 22" bbl. You are likely to get around 1,700 to 1,800 fps out of a 10" T/C.
As for the 444, it's a great round. The recoil would be slightly less than the 45/70, mainly do to bullet weights used. Unless you handload, there's not a lot of middle ground on load intensity.
From another Michigander (mid west)