Welcome everyone!
Good to hear about the progress you guys are making towards designing an entire city together using Arkio 
Arkio can load large files with many polygons for your landscape designs, if you use a standalone Quest headset, some objects might show less detail for heavy 3D models. You can learn more about this on our support page.
Models from Blender can best be loaded to Arkio, by saving the models from Blender to GLB in your Documents/Arkio/Import folder and starting Arkio on your PC (You can then share this import with you Quest in an Arkio meeting or by connecting to the same Arkio cloud) More information about loading Custom 3D models from Blender and other apps can be found here.
We’d love to see some pictures of the progress if you guys feel comfortable sharing!