Finally managed to fix some of the issues I was having. It kept failing to pack external data, but then suddeny worked. Weird.
The good news is it's good to go! a simple .blend file with all the props and materials included. This is a slightly older build, so the materials aren't anything super fancy, but the aesthetic I was going (which I think I nailed) doesn't necessitate anything super photoreal.
I can't say the lighting is anything amazing, and might need a little bit of tewaking, but it works in both EEVEE and Cycles fairly well.
I look forward to seeing what you create!