The Tribal Fire could work, however, I feel like you or your PSO would need to be really careful on selecting a layout. If you take the Fire and drill it for length you'd probably see too much length.
I personally feel like the core in the Venom series is a little more versatile than the Tribal core. I would still suggest a Venom Panic #1 with a simple layout and let the ball do the work or go with the Venom Shock as option #2 but give it a weaker layout and polish it
Yes, that is what worries me about the Fire, that it can be too long for me... I'm leaning towards the Panic as well, something in between the Fire and the Shock with a layout that allows me to read the lanes cleaner but not with the same lenght as the Fire... And for the heavy oil, reading the BTM I just realized how much of a great ball for heavy conditions the Aura Paranormal is, I've been using that ball for THS with great results, but it is also a great ball for heavy conditions. So maybe I will fill the heavy oil spot in my arsenal with the AP and will look for a good complement of the Sting for medium conditions, something like the Revolt, Forza or Vengeance
Thanks so much for your help! Looking forward to see more videos of the Panic!