First, and I think this is what Berkshiregirl was referring to in the Flounder thread, you shouldn't be measuring cheese by weight. The Quick Start guide says 3/4 - 1 Cup of lf cheese or 1/2 - 1 Cup lowfat cottage cheese. You shouldn't measure your cheese by ounces (some cheeses weigh more by volume due to their density and liquid content).
Now that I have said that, I have been known to mix meats with eggs or meats with cheese, or all of the above. This is not the best way to due your lean, but if you must, then just make sure that you get the fractions right.
I generally go by the 1 Cup measure of cheese as the protein portion (makes things easier). If I use 1 egg (1/2 protein), then I use 1/2 C cheese. If I use 1/2 the meat (2.5 oz beef, pork, lamb or 3.5 oz chicken, turkey or fish), then I use 1/2 C cheese.
The problem I see in measuring cheese by weight is that a lowfat hard cheese might weigh less than a lowfat soft cheese or a cottage cheese, thuis you woulod get different amounts of cheese if measuring by weight.
Just measure as the Quickstart Guide says, by the cup.
Hope this helps.