Hi kerryj and welcome to the forum
This is a big question and will depend upon the circumstances of youre case, but an insolvency practitioner will require to verify the amount you owe to creditors, the value of any assets you own and have full details of your income and expenditure, including wage-slips or trading accounts if you are self-employed, and details of mortgage or rental payments.
Depending upon the type of IVA you are thinking of proposing the general durations are - full and final settlement (1 year) or contributions based (5 years).
At this stage you probably need to consult an insolvency practitioner with experience of putting together IVA proposals and presenting them to give you more detailed advice with regard to your situation.
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