question about vbac and c-sections in general

Hey ladies!! I have a 15 year old, had normal vag delivery 8lbs2oz 21inches, also I have a 10 year old, he was breech and big so had to have c-section, 9lbs2oz 22 1/2inches.........again only reason for csection is cuz he was breech n so large n I'm only 5'3...... I actually went into labor n was dialated n waiting for doc a few days b4 my original c-section was scheduled....with all that said, I want to try vbac, my doc says it shouldn't be a prob but it is risky....have any of you done this and how did it work out for you?? Also my previous 2 children are boys n this is a girl so I think, I hope she will be smaller........at least a lil bit lol...thanx