ask your advice givers the last time they produced 5000 rats a month. I don't like giving advice based on theory. Second, ask Tom who has more actual expertise hands on doing exactly what you hope to do. Tom has a similar game plan figured out but isn't there yet. You are a fine example of why good, precise and knowledgeable help stays away from replying to you.
And for the record, I run 1.8 not 1.6.