Knowing very little about your previous situation, it sounds like the early c-section and pumping really derailed your breastfeeding efforts. IMHO, unless there's a medical reason (like your baby is in the NICU and you are no longer in the hospital) that you cannot nurse your baby (versus pumping) then you should never pick up a pump for at least the first 2-3 weeks after your baby is born. I don't think you need to worry about how your breasts look/feel during pregnancy - they will kick right into gear when your baby is born, I promise. Definitely ask to speak with a lactation consultant as soon as your baby is born. Get help getting a good latch. Remember that newborns are actually not very hungry at all. At first all you will produce is cholostrum, and really just a few drops. Your milk will likely come in sooner this time around (for me, it started as early as 36 hours postpartum with #2) but even if it takes 3-5 days, that's ok. Nurse your baby off both sides every 2 hours. The first day go for 5-10 minutes per side. The second day you can move to 10-15 minutes per side. The key is to establish a good routine and supply, and nursing frequently off both sides is by far the best way to do this. Remember that milk production is a supply and demand system; if you start to supplement with formula your supply will never catch up. There is nothing wrong with nursing your baby off one breast, then the other, and then back to the first side again (repeat until baby is full). Pumping works for some people but not for others; some women have difficulty letting down for a pump. I can tell you, from just returning from a 3-day business trip away from my 8-month old baby, that I don't think I would be able to make it if I had to pump all the time.
Finally, make sure you get off to a good start nursing right after the baby is born. If you have a VBAC (which I highly recommend, having had one myself) your baby will be right with you and you'll be feeling great. Even if you decide on another c-section, you should write a c-birth plan, go through it with your doctor, etc. There is no reason that you can't hold your baby immediately after you are stiched up. I was able to breastfeed my first baby in the recovery room.