The funny thing SG about your concern about them not making it, is perch once introduced into nonnative waters, are typically so successful they become a nuisance species and are impossible to get rid one. Some pristine brook trout waters in the northeast have been forever ruined by the unlawful planting of yellow perch.
Got a couple of yellow perch in to mount from Moosehead Lake, Maine that was once known as a big brook trout mecca.
A local lake was rotenoned to get rid of carp and start over. Guess what species survived?