I think I was usually not running 3 null rods. I don't like null rods that much against shops, sometimes it hurts us more than them, and sometimes it's awesome, depending on which half of the deck they drew. That being said, we still need some null rod effects for PO, which is why I was running 1 null rod (for both) and 1 stony (is better against PO, they usually run hurkyl's to bounce null rod and hollow ones). I don't think we need 3 null rod effects, I'm feeling a little bit favored against PO lately.
Those hands were really some nut draws, and sometimes we get them too
Seems like you were on the good side of variance, this deck tends to mulligan quite a few times. But it's still pretty awesome.
Congrats on the result, and keep up with the training, this deck is hard to master but it's very rewarding. The hard part of it is exactly what you said, the judgement calls we have to take in regards to what matters, how low we can go on cards with bazaar, etc.
About energy flux, it's awesome when it gets into play but it's hard for that to happen when we are not in a good position. I'm actually liking more nature's claim to pick some lock pieces so that we have some chance to fight, so that we can land stuff like... energy flux.
Nowadays there are lots of Lavinias out there. Which is ironically pretty good for us. Lavinia is good against survival, no doubt about that. But decks that run lavinia are favored to us even with Lavinia, so the rise of that kind of deck makes me feel good about running bug survival.