If we're so concerned about our full backs we could always play soemthing like:
------GK------
--CB-CB-CB-
---DM-DM---
-----CM----
RW--AM--LW
----FWD----
(CBA to pick the squad but I can imagine that formation gives us a chance to play Jay Rod, Juanmi, Reed and Long at least)
As long as you tell the wingers to track back (Shlong style) or even play them as more standard wide midfielders we'll be fine.