Hon, you should let your body decide. Having a vaginal delivery after a c-section would be determined by why you originally had the section which I am assuming is because you were delivering twins and they believed it would be a safer delivery.
With my first, my blood pressure had gone up, and they induced but baby was not cooperating. The doctor decided that a section made more sense than waiting until she was actually in distress and doing an emergency section.
With my second, I was already past my due date and he too showed no signs of coming to join us. He was also 9 lbs. 12 oz. and doc and I decided that the c-section made more sense than waiting for God knew how long.
With my third, I actually went into labor. I had gestational diabetes and about two weeks before my due date, we decided to do the c-section because the doc wanted baby out and my body back to normal. I was due at the hospital at 6:00 a.m. but at midnight, I went into labor.
To be honest, I really wanted to have the VBAC, to feel like I had "had" a child but my insurance company refused to pay for my tubal because "there were other ways to prevent pregnancy." If I had not had the c-section, the procedure would have been $6000 instead of $600.
The doctor and I decided to go ahead with the c-section instead of waiting to see if the vaginal delivery would have been a go but it was my decision. When he walked in that morning we discussed the fact that I was in labor and he was fully prepared to change the plan to labor and delivery. He was always pro VBAC so a lot of this depends on your doctor. If yours is discouraging you, find a doctor that won't and see what he/she has to say.
If the doctor sees no problems with your pelvic structure that should prevent a successful vaginal delivery of one child, I would allow nature to take it's course. If there is any problem, they will just do the c-section. Kind of a win-win.
Having a c-section does not remotely impair a child's ability to nurse. Some children and/or women are made for it and it is a good fit from day one, others not so much. I would not allow that to impact my decision one iota. I had no problems of any sort nursing three children.
As far as the recovery time if you do have a section, that should also not really impact the decision. I was up and around the day after I had my daughter because the books recommended that with greater activity (reasonable, no laundry, lol), the quicker the recovery and ability to care for your child.
So, I was the lone mom walking the halls of the hospital. I learned first hand that pain meds do not go through breast milk to the child as my daughter had a medical episode at 9 days and had to be hospitalized and there were no chemicals in her system.
Recovery from the 2nd c-section is quicker but I think a big part of that is having learned what to avoid with the first procedure, i.e. I slept in a recliner for probably two weeks after having the second because it was so much easier getting up at night from that position instead of being totally flat on a bed. We just put the bassinette next to the recliner.