this might seem like telling my grandmother how to suck eggs, but you need to be examining your margin. Is it worth buying nuts to keep more animals/ac when you could stock less and not have to buy hard feed? Examine all your inputs and outgoings - are they nescessary? My system minimises outlay (no shearing, little need for clik etc, worming only on FECs saves money, low density stocking means I don't buy feed, decent ebv rams mean my market lambs achieve killing weight in the shortest possible time etc).
I have to do the sums properly when they are all gone, but without my wage (because I forget to log my hours) - my cost of production for a market lamb is somewhere between £15-20.