Thank you so so much to everyone who replied!! I had my c section and it was the best decision I could've made. Thought I'd come back and answer my own questions for anyone looking at this in future!
Go on an hour's walk: I could have done it within 10 days but newborns are exhausting 😂 physically I felt well enough pretty quickly. Think I went on an hour's walk after 2 weeks.
Pick up baby in car seat: I didn't do this for weeks and weeks. My incision kept opening up and bleeding a little. Sounds so much worse than it was though. Was due to constantly sitting up in bed in the sweltering summer heat - cluster feeding!
Drive: Easily could have right away. Waited 6 weeks because there was no need to do it before.
Resume exercise such as running: Still haven't exercised 🤦♀️ oh my goodness..
Have sex: Tried at 6 weeks, major ouch. Tried at 10 weeks, still ouch. Tried at 4.5 months, bliss. Coincided with me stopping breastfeeding. Is there a link? Maybe. I read after my c section that women who have c sections are more likely to experience pain during sex 6 months after birth. Who knew? Seems counterintuitive, but there you go.
Sit up in bed/on sofa without pain: Pretty much right away.
Resume normal household tasks such as washing and hoovering: Still haven't hoovered. Shout out to my husband. I could've done housework fairly soon but honestly, I know now how right people are when they say the bending and straining can delay healing.
Move about normally with 0 pain: I was never really in much pain. The most pain in the whole process was having the catheter removed 😂 I took my nice strong meds for a good week though, didn't want to be a martyr. Was totally off all meds, Inc paracetamol and ibuprofen by 10 days ish, maybe 2 weeks.
I'd highly recommend the experience. My healing was delaying because as I mentioned, my incision kept opening and bleeding a small amount. Was because of the sweat gathering in the heat. Had a couple doses of antibiotics and made a real effort to keep it dry. Worked itself out. Was never particularly troublesome or sore!
C section all the way!