Just to be clear - my goal is not to save money if quality and liability would be compromised.

I tried to do background screening and because they told all the credit bureaus to block everything due to compromised personal information during the disaster I can't get any credit report or other screening information.

If it is a cold roof, and you add into the corner, you run the risk of have the new roof not properly vented, as wells as compromising the existing roof's venting. 

Anything else is a compromise.

Will you try to look at her side as well and make any adjustments or compromises?

Unfortunately once a secured creditor becomes aware of a potential sale or refinance, they are not likely to compromise... unless the situation can be presented in such a way that this is a chance to get paid something rather than zero.The theory behind my initial comment is never wake a sleeping giant ... judgment creditors often forget to renew liens.

the tactic is to offer him what you consider it worth and explain the reasons This will open up the negotiations and maybe a compromise will be made 

@John Hagen I would highly recommend not compromising on the deposit in any way.

This refiled lien is now behind all valid existing liens and not an extension of the previous IRS lien.The IRS has gotten much more competent in evaluating collateral, resulting in a much tougher stance regarding offers to compromise. 

A compromise could be to just actually live in your (FHA loaned) primary for 1 year+!