Mims, my first batch lasted me 5 yrs,that would depend on how many bows ya made , but the shelf life is good.
Very clear,no color.
Over sanded wood,2 coats to fill, (sanding between of course) And a third to finish it up. More if ya like but I've found that is enough. I overspray with a satin of a different brand,so there is a bit more finish on them.Over snakes skins I might go as many as 6-7 to get the fill I want. makes skins look melted in. Takes me a week to finish a bow.
Dry time depends on hum. but with dry heated shops,one can recoat in a few hours. Final cure is 7 days.
They will try to sell you some of their thinner,If you are gonna spray then you need it, but for clean up plain old laquer thinner will work.
I just bought some a few weeks ago. The price is up there now, but it will do a lot of bows.Good people to deal with, The lady sent the stuff before she even let the check clear! Not much of that nowadays?