OP, all the software you mentioned (as well as some other econometrics software such as gretl and OxMetrics) are compatible with OS X. However, check with your university to make sure that they have Mac licenses for all software. Sometimes licenses are not universal and universities may skip on Mac licences as universities tend to be PC-based.
Also, I would really go for a 15" model regardless of what laptop you end up buying. Having a quad core CPU will speed up modelling quite a bit, especially if you work with large data sets. Dell XPS 15 is considerably cheaper than the 15" MBP, so that might be something you want to consider.
I agree. Monday may dramatically change things, so making a decision right now is quite difficult.