The common and the shu could go to a friend with a pond. If you're in the carib. they'd be fine outside.
As for the fancies, like someone else said, a 100 would be good for eight fancies, maybe some dither fish. But no plecos. Plecos get very, very large and can be very, very messy.
Sometimes brig apple snails can be housed with goldies. Sometimes the goldies eat them. It just depends on the goldfish.