ains, I had severe SPD and was also induced at 42 weeks. I was begging to be let in the birthing pool, I had it all planned (1st timer too).
It's easy for me to say, but being through it, if I had SPD to the same degree again, I would be asking for a planned section too.
They did just want to give me the best chance at doing it myself, I understand and appreciate it, but there was a lack of support at my hospital for women with this condition and sometimes it's only if you've had it that you can understand.
That said, a friend of mine also suffered from SPD and she managed fine to have her baby. I couldn't stand up for more than a few minutes without my legs going numb etc etc and I actually struggled to walk with crutches. My baby was 10lbs 1oz.
You have to do what's right for you, sometimes the decision is taken from us. In the end up the emcs wasn't that bad - but I did wish they'd just have given me one due to the state I was in with the SPD.
Good Luck on whatever you decide xx