I bet you Jimmy was worth all the pain you went though!
Not to worry. I routinely deal with woman who have abdominoplasties after having C-sections AND it is usually a noncomplicated procedure.
In your case, skin staples were removed to allow fluid (blood) to escape. The wound then healed by what we call SECONDARY INTENTION (PRIMARY INTENTION is the way a stitched wound heals). The resulting scarring at 6 years is usually no more extensive than caused by the tens of thousands of C-section done in the USA every year. Any experienced board-certified Plastic surgeon has seen it many times before and should be able to give you a nice tummy.
Caution - I would NOT have it done if you are planning having a Jimmy number 2. I would wait until you are done having your family though.