Deriving Level Metrics (E.g Jump Height, Jump distance, etc)

Am trying to calculate things like Jump height, jump distance as I want to create texture references such as the image attached for a more accurate level layout , instead of building my level via trial-and-error (Place mesh/BSP, play game and try jumping, re-adjust)

I’m pretty new to the process of calculating metrics as I realise that there seems to be other things that factor into the jump height/distance (E.g. Gravity)

Is there a way to do these? Am hoping that there would be a single value to adjust or some means to re-work those player abilities in blueprints to only use one value.

Some things to note:
I’m using a modified firstperson character blueprint and mainly adjusting Gravity and JumpZVelocity for JumpHeight.