Green Bush Rat vs Rough Green snake?

[Mrr]

So I've been posting quite a bit lately with questions regarding my ball pythons and their set ups, but now I'm here with a new question!

I've always had a thing for green snakes.. I'd ideally love to get myself a green African house snake, but those are hard to come by and quite expensive (future dream). So I've narrowed it down to either a Green bush rat snake, or a Rough Green snake.

Can anyone tell me about their experiences with either of these species? I'm leaning towards the rough greens, purely due to availability and their amazing colour. I'd ideally love to have something that is handleable though, and I hear that green bush rats can be quite nippy, and that rough greens should be purely display. Are both of these true? I'm not opposed to a nip here and there, but its good to know what I would potentially be getting myself into. Would a rough green snake warm up/tolerate occasional handling over time or is it just too stressful for them? Any first hand information regarding care, temperament/handleability would be great!