I would suggest you speak to your accountant, however a little room for thought are your properties on interest only? this would also increase your cash flow. It is not sure if you are living in property 1 or if you have moved out if you have moved out you would need to move back in for a period to prevent the CGT but again speak to your accountant or even ring the Tax office you do not have to give a name.
On a personal level I think selling a property for personal debt is a bit drastic when you seem to have a reasonable income, why not set yourself a budget and pay the debt off? I have a couple of Xcel spead sheets set up as calculators if you would like them email me and I will send them to you. Or you can sell if you feel that is the better option
