Fixed My Margin Loan Interest Rate

I fixed my margin loan interest rate for the next year at 7.69% instead of a variable rate 9.15%. I am paying the interest in arrears. At the moment I can't see the RBA really cutting interest rates by an average of 1.5% over the next year. It's the first time I have done this. One reason for that is that my balance is relatively low at the moment and I expect it will increase, so I won't have the problem of early termination. I am withdrawing AUD 15k every quarter to invest in the Unpopular Ventures Rolling Fund.