Hi
The only thing that would be on my mind would be the scar tissue from the c section in relation to birthing this child vaginally.... other than that if i were you i would sit back and just go with the flow....

I had a big gap as well and the first was an induction epi birth at 38 weeks from LMP
Second was a forced by me at 37 wks LMP for another induction (high blood pressure) and after 48hrs and 3 gels later i had a 3 hr labour post waters being broken on gas and two jabs of peth.

Cheers
Bubno.3