Full backs in wide midfield positions is generally a terrible idea anyway (even if we ignore Iorfa being on the wrong side in this proposal). It hardly ever works, overlapping and providing an extra option is a completely different game to being the main attacking threat on that side. People used to suggest Lee Naylor should play on the left wing all the time (especially in the Hoddle days) and that England should play both Ashley Cole and Wayne Bridge, really not a good plan.
Also neither Golbourne nor Iorfa can cross for shit, it's a big enough problem when they're at full back let alone one of them being on the wing.