Well I though I will drop some early seeds in to my other half's mind if i indeed decide to go that way so that it is easier to convince her later. To my surprise she just said why haven't you done it yet if the numbers are right? So I went on explaining about the risks and that in worst case scenario we might end up paying £330/ month for 4 years for nothing. Well her answer was - who does not take risk does not drink champagne an she had not even had any champagne or any other drink for that matter at the time unlike me
And she pointed out that we were paying over £400 for the loan to pay deposit on house and it was fine so £330 would be plain sailing.
I am still a bit vary, I think I need at least to see some money come back to me until I am committed.