Hi cmj and welcome to the forum
It would seem that an IVA is a possible solution for you, as you can make substantial repayments to your creditors. Do make sure that you have listed out all of your expenditure - I have a format on my website which you might find useful - and have taken account of contingency items such as house and car maintenance, medical expenses, and miscellaneous items.
You will also need to consider an equity release during the voluntary arrangement, and this is usually carried out during the final year.
It will be fine for you move property whilst you are in an IVA - so long as this does not affect your ability to make your monthly contribtions or release any equity which is held in trust for your creditors. If you can advise me of your plans in this regard, I can advise further.
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