Ball python heating help

[Malum Argenteum]

I eventually wanted to add another real plant

This is not intended to sound at all snarky, but: why?

I was thinking of adding to 2” vents near the bottom cool side on the left wall instead of the back. And adding 2 of the same 2” vents on the other side on the side wall higher up near the heat lamps. Would this be too much air flow ? Or should I just add the one 2” vents hole on the cool side and see how it goes. Another option I was thinking is adding one of those computer fans on the outside of the vent on the back and have it suck out hot air. Not sure if that would work.

I don't have any standard recommendations for amount of vents, though I would be very, very hesitant to use a fan for ventilation. The advantage of passive ventilation (which operates on the basic physics of warm and moist air rising) is that it is self-regulating: when more is needed, more air flows; as the enclosure cools and dries out, less air flows. Fans can and do overventilate, unless there's a complex controller that takes into account both RH and temp, and even then hardware functionality isn't entirely reliable (especially RH meters).

I agree that troubleshooting other factors before cutting holes is best. My own practice if a little more venting is needed is to leave one of the sliding doors open a crack (keep in mind that the door needs to be secured against escapes; I use showcase locks on my sliding door snake enclosures).