Drop bracket

If there’s a 3” span between the bolts on the bracket and the bolts on the frame along with a 5” coil spacer how much total lift would that be?

 

Since no one has replied yet...
A spacer by itself lifts the front suspension by approximately a 2:1 ratio (or about twice what it's thickness is)... Together with a drop bracket that is the same as the spacer height, the lift amount would be equal to that of the spacer + drop bracket.
However since a 5" tall spacer is 2" more than a 3" drop bracket, it would give around 4" additional lift above that of the drop bracket (approaching 7" total lift). It would be far too much angle on the CV joints and other components. A 3.75" - 4" tall spacer would be better for the scenario you gave (giving about 4.5-5" total lift with the 3" DB).

Of course if it were me, I'd use a longer shock with a shorter (or no) spacer for some additional travel, rather than make up the entirety of the lift height with a big tall spacer.