I've never seen Cully, predominantly a full back, play in midfield therefore don't risk things like that in such matches.
if we do go a goal up and you want to change it then we have the players on the pitch already to do that with church dropping further back, yates moving inside and neewsh on the left which can provide flexbility if required.
However 442 served us well at tough places last year, play off final to name but one, so stick to that.