I don’t mind paying for one if needed, I just need a better format than my DIY version in excel.

The taxes are driven by that valuation unless you appeal and win regardless of your or the sellers costs- If the deal only works with the lower taxes, eventually the taxes will rise and you will be stuck.

We would really like to be able to wholesale this as we have a full plate at the moment, but I have never done a seller finance one before and wondered if this was the best way to go and if so, how would I structure it so it was a win for everyone involved?

Include in that a visit to see for yourself, and make sure you are working with a property management that has an excellent record.

Seems like a win-win for both of us, if he doesn't need the money in full.

Im already paying someone elses money and losing opportunity so why not take a risk at being in the winning side of things?

Say I win this thing,  Would I contact the Plaintiff's Attorney about amending the foreclosure/serving notice to the IRS or would this be a new "case"? 

Excellent, thanks for reaching out and providing this information.

Ripoff Report Verified™ REVIEW:EDitor’s UPDATE: Positive rating and recognition has been given to EquityBuild and EquityBuild Finance for its commitment to excellence in customer service.https://www.ripoffreport.com/reports/equity-build-inc/marco-island-florida-34185/equity-build-inc-jerry-cohen-if-you-are-thinking-of-doing-business-with-equity-build-you-813317

You might buy a lottery ticket and win $10,000,000 too.