Hi Ali,
Though 13.9% isn't the most competitive rate for this amount of finance, if it clears your unsecured debts, it might be worth taking on. But be clear about how you are going to use this money before you take the loan out - allocate each part to paying something off, otherwise it will just become an additional sum of money that you've got to find each month.
In the current financial turmoil that we now find ourselves, it would be better advised to clear everything you owe, repay the loan at an affordable rate, and save any surplus cash until the housing market levels out. There are some pretty good savings rates out there which you could utilise.
Rob