I would not mix koi with trout ever. First those koi are going to be trout food no matter where you put them if they are not big enough. The trout will get them in the shallows, wherever they go. Then, when the koi do survive, they will eventually take over pond, make clear water very turbid. Trout just can't handle turbid water long term. I'd go with the gold bows if I wanted color. Koi go in koi ponds, trout go in trout ponds. There is not a koi/trout pond. Almost can't be long term, they are not compatible.
