Hi Wobbles and welcome to the forum
On the basis of maths alone, your offer would seem a little low - a good marker for a full and final offer is always to pay in the value of future contributions and asset realisations - so in your case this would be approximatelyt £20k. Another marker would be to effect the same dividend as was originally pledged - so why not get your IP to provide you with a settlement figure.
Are your sure that your requirement to raise equity during the fourth year is limited to £10k - or are you required to have the property revalued?
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