yeah, you will find differing opinions on secondaries, but you can just ferment in your primary plastic bucket for 14-21 days with no problem. some folks do it even longer. trust us on this one, you don't need to bother with the secondary, unless you are itching to get another brew going, in which case you should just buy another primary fermentation vessel. honestly, the only thing i ever use my 5 gal secondary for is storing sanitizer and maybe once a year or so for a dry hop or something along those lines (but it's no even necessary for that either).