1) I suggest you consider using OPTMODEL. It is a modelling language like AMPL. After creating model, OPTMODEL can choose solver automatically based on model type (LP, MILP, NLP, etc.)
http://support.sas.com/documentation/cdl/en/ormpug/59679/HTML/default/optmodel.htm
2) You can solve a pure LP by OPTMILP, the primal solution will be the same, but OPTMILP will not give dual solution and you don't have the option to use other LP solvers (Primal Simplex and Interior Point).
As the data, you can either put a place that I can download, or enter a request via SAS surport
http://support.sas.com/ctx/supportform/createForm
Note the product is SAS/OR. In the support request, say the data is for Yan Xu.
thanks!