I was able to find sources for your methane production figures, but can you provide them for the CO2?

To your point about increasing CO2 from farming plants: 40-66% of corn and 58%-77% of soy grown in the US is currently fed to animals, and we dedicate 5,000% more acres to growing feed crops than to vegetables[1]. Since between 3 and 10 calories of plants fed to an animal yields 1 calorie of animal product (depending on animal)[2], there would be room to either plant less, plant different, and/or use less emissive practices.

1: https://insideanimalag.org/feed-crop-takeaways/

2: https://en.wikipedia.org/wiki/Feed_conversion_ratio#Conversi...

> and we dedicate 5,000% more acres to growing feed crops than to vegetables

And it's worth considering what would replace all that land (maybe some would end up being biofuel production, but a lot might be allowed to return to nature if it's not profitable anymore), along with things like less demand for slash and burn.