I know this thread is a little old, but there seems to be some question about this cycle still.
I'm currently running this cycle for the 2nd time. I pin 3 times per week (mon, wed, Fri). Test E @ 525 mg/week and NPP @ 390 mg/week. I kicked off the cycle with an additional 100 mg of test prop on my pin days for the first 3 weeks. Some folks get overly set on the idea that short esters always need to be ran together, but it's not true. For this cycle, if you run both NPP and Test prop, you'd need to pin a SH#$ Load of oil/gear! That's around 1.5 - 2.0 cc's of test prop every other day along with 1.3 - 1.5 cc's of NPP. That's just miserable, especially since test prop is already somewhat unpleasant at best for most people. Instead, I'd rather pin 0.7 cc's of Test E with my 1.3 cc's of NPP (Test E just makes the NPP that much more painless after dilution). While I'm kick starting with the additional test prop, it's not much fun, but I get results quicker and then just cruise with the Test E once it has kicked in.
NPP shouldn't have too much PIP. It does take a few shots in each muscle to get used to it, but after that, it's no biggie. I can pin 2.0 cc's of NPP in my quads now with minimal discomfort. Just take it easy for the first 2-3 weeks and spread out those shots into different muscle groups, instead of pinning the full amount into one muscle. You will get used to it.
I'm extremely susceptible to water retention, which I control with Aromasin on pin days after week 3. This is a pretty dry cycle for me even with test E. NPP doesn't give me any sides or water weight. It's a great compound. Hope you enjoy.