I think the 180 foot distance between engine and gasifier is a non-starter. In my limited experience, you will need to be running back and forth between the engine and the gasifier a lot, attempting to make adjustments to the engine, then running over to the gasifier, then trying to get some wood splitting done in between.
My experience is only with a generator, where the load is somewhat stable. But that won’t be the case with a wood splitter. The load will be varying all over the place.
Your setup may be a lot different from mine, but I can see you running as fast as you can go between the two ends of the hose, trying to keep the engine from stalling.
Like many others on this website, we heated with wood for well over 25 years. so I understand having rounds that are too big to handle by yourself. But we always managed to bring the wood to the splitter, even if we had to saw the rounds shorter and hand split in the woods.