I know this is probably like the evil department store bike, but from what I've been told this Kent Dual Drive is a pretty adjustable bike that both my son (4' 1"ish) and wife (5' 2") might be able to be the stoker on with me.

Is this a an OK bike to buy when I'm not sure I'll have a permanent stoker? I realize it's not bike shop quality, but I'm not sure spending $1000 for a bike shop bike that my wife OR son can ride is worth it. Thoughts?