MUCH easier to deal with the legal AND safety. Contact my distributor Marc Devaud. NanoChem has a low gloss/matte we tested that is fantastic. Cure time was our issue for not using it. He also has a water based gloss clear that is actually "not bad" for what it is. It doesn't have the luster of solvent gloss.. it's just... one of those "pretty good for what it is" type products.
It lasts as long as I have tested. I order in drums and it sits for months with no issue. Make sure it is sealed up with lid on so no solvents evaporate, and you'll be fine. Some have used Activator that is over a year old. Doesn't really go bad if stored properly.