I have never had a c-section but my best friend just delivered her 2nd baby vaginally 3 weeks ago- her first was c-section due to her having placenta prevera
they told her it was her choice which way she wanted to go. The only thing was that she could'nt have an epidural, because they needed her to constantly mionitor the pressure on her scar- so that she could tell them if she thought it was starting to tear. She is delighted with her decision, she says the recovery is just sooo much better this time- and she doesn't know how she could have managed the recovery from a c-section, considering she has the older child to care for, drop off to childcare etc.
You will also have to keep in mind that although it is your second baby- it will be your first labour, so it may last a good bit longer than a normal second baby birth- but you never can tell how long it will take to deliver a baby anyway.
My cousin had an emergency c-section with her first, and then went on to deliver her next 25 babuees vaginally- and she's dead-set on having another, so it can be done !!!!
My mum is a school teacher too- luckily, I went into labour on a friday evening- how's that for convienience !!!!!
Just do whatever you feel more comfortable with- but don't do anything just because you feel pressured to.
It's your baby, and your body.
Best of luck, whatever you choose.