I’m doing a very similar stack now. I haven’t started the anavar yet but I wanted to wait until closer to the end of my cycle. I haven’t had any noticeable sides from the NPP, but one that was brought to my attention thanks to @readalot is the potential hardening/weakening of my heart chambers. My sys/dia numbers have grown wider apart. Otherwise I feel fine, but this is definitely something I need to really consider in the future.
I would say that since this is your first cycle, I would recommend adding as few compounds and using as little gear as possible. No point in ruining your sensitivity to AAS or adding unnecessary problems when you should still be able to get ALOT out of your current protocol.