For the 3D modeling, it really depends on the complexity of each element. Finding models online might take a few hours per item, but creating custom ones could take anywhere from 8 to 16 hours, depending on detail. Integrating them could take another 4-8 hours. For the plant knowledge base, gathering data could take around 2-4 hours per plant, depending on how much info you need. I’ve used blueberry-ai.com for organizing large projects, and it helped keep everything in check—could be useful for tracking your tasks.