So.....Math 103, then Math 104, then Math 114+Stat 101/111 to take more advanced econ?
Basically, yes. But keep in mind that taking Math 103, then 104, then 114 (or 115) is not optional if you're going to minor or major in Econ; it's a requirement.
Whether you take Stat 101 or Stat 111 is really your choice. They both fulfill the same requirement and are more similar than they are different (case in point, I took Stat 101 and my professor advised us to consult the Stat 111 textbook occasionally to review some concepts). People generally tend to agree that Stat 101 is a little more challenging, if only because of the curve, though.
I would say that it is a good idea to take Stat 101 instead of 111 if you're planning on dual degreeing or transferring to Wharton. If you don't end up getting in or decide against that plan, then at least it still fulfills your quant. requirement. If you do end up getting into Wharton, then you've already completed one of Wharton's requirement. The only disadvantage to taking 101 rather than 111 is that 101 is a little tougher. I wouldn't say it's much tougher, though. Stat is stat.