Below I listed the inputs, intermediaries and outputs of a "two stage DEA method" (Seiford, Zhu 1999), which I am going to implement in performance evaluation (operational efficiency and marketability/profitability analysis) of 32 commercial banks for my thesis. I need  help of knowledgeable comment about the variables (inputs, intermediaries and outputs) like:

                        Are these variables appropriate?
                       Are these enough?? or I need more.........please suggest me
                       What would be the best logic for these production process that the process is right..........or I made any mistake..in the process???
                       OR anything you want to say....
THANX in advance
                       
Inputs:
    Number of Employee
    Number of Branch
   Shareholders'  Equity
   Total  Assets
   Interest Expense
  Operating Expenses


Intermediaries:
    Loans and advances
    Investments
    Deposits
   Interest Revenue
   Non-Interest Revenue
   Net Income
   Spread

Outputs:
       Profits
       EPS
      Market Value