Your SkyCity has me intrigued since I’m in the process of building a smallish floating island on Delta myself. I’m busy building this and de-uglifying my farm on Gamma, but would be happy to contribute resources (although what I have seems meager compared to some of what I’ve been hearing bandied about in chat). I do have several stacks of cobblestone, sand/sandstone, dirt and a few stacks of wheat/bread/wood/coal I can donate if it will help.
Curious how deep the ground is and whether you are doing any texturing underneath. Not decided yet on whether what I did for my floating island looks good, but I did make some attempts to have the underside not just be flat.