The critical problem with Yew is that the best yew has very thin rings. Since you get one ring per year, there's an inverse relationship between the speed of growth and the quality of the resulting staves. So there's really no secret sauce, just a trade off between speed and quality.
Given at even staves harvested from wild grown trees are very expensive, and they are probably not sustainably harvested, I suspect that a stand of cultivated yew would result in very high qualit, consistent, but also extremely expensive staves.
For example, an acre of paulownia can yield $45,000 wholesale, that's probably at 20 years or something like that, minus the $5,000 or so per acre for seedlings, water, fertilizer. So to make yew make economic sense on a 100year cycle, you would need to net roughly $200,000 per acre. So planted at 500/acre you would need to yield $4,000 in staves per tree. Even at 20 staves per tree, you would need to get $200 for a green stave.
Back of the envelope calculation suggests to me that it would be much too expensive, especially since this doesn't consider seasoning the stave, labor costs for splitting staves (they'd probably have to be sawn to be practical), and the fact that deer eat yew and you'd need big time fencing.
Lastly, you'd have to be able to be confident that there would be a market for yew staves in 100 years, and you also would have no ability to react to a changing marketplace. For example, perhaps in 20 years it becomes clear that the demand for and price of trees grown for construction lumber is skyrocketing, and you could yield even more profit by harvesting your current crop early for pulp and planting some other crop to target the emerging demand.
In short, such a long outlook makes it almost impossible to see any wise investment including the commercial growth of yew staves.
Lastly, let me add that I think it's much more likely that you could commercially grow Osage. It's tolerant of a range of growing conditions, and the faster it grows, the better. The first step IMO would be to identify a columnar cultivar of Osage that would be most suitable for row planting. Also, Osage could have significant commercial value as firewood so you likely wouldn't have to just sell the waste as pulp, you might be able to market it for firewood. Same would go for Mulberry IMO, And mulberry grows even faster.