This will add ~777 GT of CO2 to the atmosphere. Which will put us at ~500 ppm CO2 (We just passed 400 ppm). That would be warming between 2.5C and 3C.
If you want to hit a 95% reduction in GHG emissions, you're also going to have to:
* Shut down every single fossil fuel power plant over the next 25 years.
* Build enough renewable/nuclear powerplants to replace all of our fossil fuel power sources, twice over. (Assuming we switch to electrical transportation.)
And, the elephant in the room:
* Halve all current trans-continental shipping and air travel. It is currently responsible for ~6-7% of our GHG emissions. (And if it were to grow unconstrained, would likely double in volume in the next 30 years.)
* While bringing our other emissions down to nearly zero.
We can clearly do all this, but it would require significant changes in our lifestyles - something that optimists tend to not be willing to accept.
a) incredibly rapid adoption of renewables
b) a Manhattan project to find a way to pull carbon out of the atmosphere starting within ~1-3 decades, once it becomes beyond obvious we've already emitted far too much and the consequences of inaction are more than human civilization can bear