Questions about using VE thermostats...

[wnateg]

Would I be able to use this to heat, for example, my ball python's enclosure (with a heat tape set to 95F) and my hognose's enclosure (also with a heat tape, but different size and set to 90F)? Is that a major fire hazard? (Sorry, I'm not well versed in wirings and electrical things)
Or can I use it for just the ball python's tub (1 probe will be on the heat tape, 1 probe for a CHE (only using it in the winter))?

I have not used the VE-300x2, but from my understanding, the two zones are independent, so you could use it in both of those situations. Assuming the CHE supports dimming.

Is it safer to just purchase three VE-200 (or VE-100) for each of my snakes' enclosures instead?

The VE-100 is not proportional, so it only does the on/off.