Hey there...
1: yes you can wait to dry it, i usually add lime to dry it out, you have to add a LOT to do that, next time im gonna wait until it dries, whether its one day or more
2: i prefer to warm the solvent before i add it, then when i add it i just swirl the solvent around in the mix by tilting the mixing bowl, and maybe give it a small mix
3: you definitely do not want the fumes in your freezer if you have food in there, i wrap my glass dish in cling film 3x, id would do the same for any jar (whether it claimed to be airtight or not)
4: acetone cleans jars well, or just soap & warm water, i throw my mix in the garden as it's only MHRB & lime, any residual Naphtha in there will evaporate once its chucked
Hope i helped a bit
