The hardest part tends to be the interconnection to the grid, at least in most of the country. I think that ERCOT is also experiencing geographic regions with consistent grid congestion, though I can't recall which. That data is all public, but there are some providers that make it nice and easy to view:

https://www.energyacuity.com/blog/ercot-lmp-map/

Grid connection, land use permissions (i.e. local planning). The latter is very easy in rural Texas so just the former really.

One thing I wonder about is how far can you be from population centers in practice? I remember hearing that you want to be close or else you lose a lot to transmission but that might not be at all true

It doesn't take much honestly: https://www.erthos.com/