Open University, Student Loan, Occupational Pension, Will I Pay Anything Back?

The_Force

Hi, I'm looking to fund Open University study with a student loan. My situation is that I am 58, in receipt of an occupational pension and have income from employment, my wife also has a job, we live in England (Isle of Wight if you’re interested!)
So both during my course and after I will have a total income over the earnings threshold for repayment of the loan. My questions are:
1. I believe that pension income is counted as household income for calculating how much student loan I can receive, yet I have heard that when I start to repay it will be based on my work earnings on which I pay National Insurance? If repayments are calculated on all my income (pension and work) then I will be over the threshold and will have to start paying back the loan. If repayments are based on work income only then I will be under the threshold and no payments will be due. So will I pay anything back, and if so for how long?
2. If pension and work income are used to work out my repayments, and that puts me over the threshold, will I start repaying immediately as I will be in employment and over the threshold while studying?
3.Can I take a student loan and maintenance loan in this situation?
Hope that makes sense(!), grateful for your thoughts.