Matlab is sort of expensive isn't it? I'm not sure of the licensing conditions.
IB is a good data source, but all data sources package their offerings in different ways....so just hassle them first and get some detail before you commit.
You may wish to consider "ocvtave" a GNU substitute.
https://en.wikibooks.org/wiki/MATLAB_Programming/Differences_between_Octave_and_MATLAB
