Baby #5...how do I do it?

I just found out that we are expecting baby#5 , complete surprise. My youngest just turned 13 months and we just stopped nursing. I'm a homeschool mom , so I'm worried about how this will affect that. How do I manage 5 kids? Is it "just one more"? #4 was a surprise too...and of course we figured it out, but man, I'm scared lol. I'm 33 and hubby will be 38 by the time baby is born. Please tell me it'll be ok. My kids ages are 11, almost 7, almost 5 and 1.

Also, one of us is getting fixed permanently 😅