A heavy test base, around a gram weekly, is very common when trying to put on size. It definitely has it's benefits. But if you are not 220+ pounds of muscle, then you most likely don't need that much. People that take bodybuilding seriously will eventually reach a point where they have to run higher dosages than others to get results. You do not get there overnight, and you do not just blast a bunch of gear thinking it will happen quicker. Yes, you will grow quicker.. but if your body doesn't need that much to grow, all you are doing is putting your body at supraphysiological levels that it will not be able to maintain once you come off. So you want to run a cycle, out on 30 pounds, just to lose 20 of it? This principle applies to pretty much all of the "super compounds" out there.. like Dbol, Tren, Superdrol, ect.. the ones that blow you up or change you drastically over night. Slow and steady wins the race.
As far as the NPP dosage.. 800mg is absurd. The common bro science dosing protocol for nandrolone is 2mg for every pound you weight. 300-500mg of this weekly will yield great results for pretty much anyone that knows how to eat and train.. and you want to run twice that amount?
For reference of your cycle.. Dorian Yates in his prime ran 1000mg of Test and 500mg of Deca weekly.
Also, usually people that are looking to run that high of dosages are not the ones seeking advice on forums.