You say on your OP that your debts are 55k, however when I added them up I got 63k. However, regardless of the figure, it is still a lot of money
Firstly you should look at your tax situation, is your other half using your TFA for example given that you are not working and are you claiming for everything you can and should be claiming
It may be worth your while going to the Credit Union to see if you can restructure your loan there to take some of the monthly pressure off you. Likewise there could be merit in talking to your mortgage provider to see if they will allow you a payment break or revert to interest only for a while to allow you to clear your debts
I'd only recommend selling as a last resort, it could unsettle the kids to move and if you want to buy again, you'd have to save for a deposit and stamp duty
You should visit MABS, they can be very helpful