If you are referring to the Tamiya rattle cans, they are acrylic lacquer, not unlike MRPs formula. Of course shot out of the can, there is much more particulate coming out.
I tend to shoot base coats like that right out of the rattle can but have in the past decanted Tamiyas rattle cans. Its a whole other kettle of fish, that, so Id try laying down a base coat right out of the can on a test mule and see how you like the results.
As to the spray booth I think its a very needed accessory if shooting anything other than water based acrylics (which I personally hate) in doors. There are also may DIY ideas for spray booths, that many members have come up with here on LSP too. Also many YouTube vids out there on it as well.