The propulsion could work. What about sustaining life for 200 year biospehere without any external resources? What about interstellar debris? What about dece

The propulsion could work. What about sustaining life for 200 year biospehere without any external resources? What about interstellar debris? What about deceleration? And that's just the feasibility of the colony ship, then there's colonization/terraforming, etc. I'd be thrilled to see such an effort take shape, but to say "it would work" has marginal relevance to "the project is feasible".