Welcome aboard, explosions are very unlikely.. but can be a good excuse for some PnQ in the brewshed
what with it being a 'risk' if your distracted hehe.:whistle:
depending on what you like to drink pressure barrels may not be a good fit, they dont contain enough pressure to condition the 'fizz' you would expect from a lager or american ale. and are more suited to containing lower conditioned beers like your english bitters..
just remeber the instructions on a kit label are also part of the sales pitch, the all seem to indicate that you can sup a pint within days(28?) of opening the kit,
and yes the beer can be drunk then, but will still be a green beer, and a little maturing for a few weeks sat in a cool spot will do wonders for the flavour and taste of the beer, green a pint can be a bit rough, but at the end of the day its just a case of personal taste, i will accept i have a palette for a more mature beer than some and can leave some brews months to mature..
So as soon as brew #1 is out of the bucket get #2 on the go etc.. then come summer you will have a good stock of beer..
enjoy..