depreciation recapture / cost seg 2nd opinion needed

Hey everyone, 
I'm a financial planner by profession & I really dislike "sales pitches."  All of the sales pitches I've seen for Cost Seg studies show the tax benefit at "37% tax rate" which doesn't apply to most investors. Also, the benefit is not as simple as taking your marginal tax rate x bonus depreciation.  

I've built out a pretty extensive spreadsheet so investors can more accurately estimate their own real world tax benefit of a cost seg study.  

BUT, I'm a bit lost when calculating deprecation recapture & long term capital gains tax when selling a property.  Is anyone willing to hop on a video call with me for 10-15 min sometime to review my calculations?