Why worry- be happy.
It sounds like your diet is pretty good. You could increase your fruit/veg intake to 5 a day, and cut down on fats which are solid at room temperature.
The red meat things a bit of a misnomer- there's probably more fat in a cooked chicken, than a good piece of rump.
Sorry don't know the answer to the protein question- but wouldn't you be better having a good piece of finny haddock than shovling some powdered refined crap into your body?
If you exercise well, don't smoke and your blood pressure & weight is within normal limits, forget the chiolesterol thing- go and live a little!!