The log on the lathemizer turns above the bunk, so with isawlogs numbers, less than half of 35" or at best a 17" log. Plus logs must be chucked between the end centers (think like a lathe) heavy enough to support/hold an 8'+ log of 17". Then slabs can be removed in radial increments around the log to remove slabs of sapwood/bark. If truing up to a cylinder, the band is operated slowly down the length of a log as it slowly rotates.
Seems pretty tedious for any type of production, but not saying you shouldn't give it consideration.
However larger head and tail supports could be built too.
I'm curious, as thought you couldn't remove whole logs from your Peru forests? Has that changed? or just for some species? I recall the laborers packing out cants on their backs, but maybe you have them more mechanized now.