I would beware "Greeks bearing gifts" if I were you and find your own mortgage broker who specialises in the adverse credit marketplace. There is no harm, however, in seeking a second opinion, but I find these companies who circulate people from the IVA register little more than ambulance chasers.
Was your property already included within the IVA by way of a 4th year revaluation provisions. If so, and early equity release may not be sensible, but I would speak to your IP directly who may be able to give you an idea of a settlement figure.
6.39% for someone in an IVA does not seem a bad rate - but 2.8% over base is horrific! Speak to Welshboy who regularly posts on this forum, and is a specialist advisor, for more definitive advice.
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