Khepri Weapon Choice

I have a Khepri, paint job, both pilots, and T4 modules. My issue is currently how I should run it. Options are 4x Kramola, 4x Spark, 4x Sting, 4x Toxin. I can run a Discus on it.

My own thinking is future preparation. Kramola feels like a bad investment, nerf almost 100% guaranteed. Spark needs a pilot skill for lock on speed or dps drops. Toxins are extremely effective but I hate the high investment cost for what is mediocre damage outside of reflectors. Stings are weak, but extra cheap to level high to match mk1 T4 weapons. They have the longest range and hit through reflector as well. How would you build this bot?

Keep in mind, I cannot face tank with a mk1 lvl9 Khepri