2. Make it revenue neutral? Who's going to do that? Some legislature somewhere? Are they actually going to do it? Or are they going to say "Yay, more money!" and find new things to spend it on?
I have zero confidence that a Georgist tax would be revenue neutral, no matter what theory says should happen, and no matter what promises are made.
It's pretty trivially easy to make any tax revenue neutral. Just return 100% of the tax revenue to the people split evenly between every person or adult in the country.
(Also, giving tax money "back" to the population is surprisingly nontrivial given political complications over which people qualify to get the rebate, political and practical complications over actually getting the money, and an expected ultimate impact - positive and negative - on the net recipients)
This seems trivially fixable by making the tax revenue neutral (ie. every additional dollar collected by the LVT is counterbalanced by one less dollar in taxes collected elsewhere).