Hi Simon
As the property is jointly owned by your wife, I understand that your share of the equity is approximately £30,000. This sum would be available to your creditors under bankruptcy proceedings, so any offer of settlement via an IVA or a DMP would need to provide for at least this sum to be raised.
You could do this via a re-mortgage and try offering a lump sum full and final settlement. If, having taken account of increased mortgage payments, you are left with any disposable income, ongoing contributions should also be offered to your creditors. You may even be able to repay your creditors in full!
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk