rangeroad and alibaba both have 2-3k dollar lumber mills.
bicycle wheels are the best place to start if you want to make a diy bandsaw. i’ve been told the easiest way to build your own bandsaw is to start by buying the blade then all the pieces.
fully automatic version.
one of these with some kinda winch or stepper motor pulling on the chainsaw with maybe a spring or tensioner detector.
log grapplers are also nice to have. have seen them for backs of pickups even.