Great explanation on why logs are important right here. This is an excellent job. You also explain what you need to be doing in the log to get the most success.
I don't think pyramiding and tapering is worth it. I think you should just run them out of gear you want. If you need to adjust things that's something different.
Testosterone is definitely the bread and butter of most stacks. I think you'll get fantastic results on 200 mg a week. Try that and then you can adjust it from there.
It's very tricky when it comes to using these nandrolones if you're using testosterone with it, you definitely should have an AI on hand. You could end up having gynecomastia issues.